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Before starting the IvAp v2 installation a thorough knowledge of Windows File Explorer is indispensable and you know how to zip and unzip files.
This webpage concerns the installation of IvAp V2 with the purpose to fly on the IVAN network, with the 64-bits version of Prepar3D Version 4+, and to be able to recognize other VA-aircraft. For a better understanding, we have split the document in several sections. These are the section that we are going through …
Section 1. Files you need. Section 2. The Do’s and the Don’t’ Section 3. Installation of files and Creating a dummy executable file, fsx.exe Section 4. Installation of IvAp and TeamSpeak Section 5. Creating and configuration of the Multi Traffic Library Section 6. Configuration of the MTL Section 7. Activating the MTL in simobjects.cfg Section 8. Starting Prepar3D and launching IvAp
Additional installations and information Section 9. Moving a 10 GB MTL to another disk, using mklink Section 10. Activating IVAO_MTL by Add-on.xml Section 11. Autostart IvAp by the sim with EXE.XML Section 12. FAQ and Contact
Section 1 – Files you need
File #1:: FSUIPC5.dll – (Download FSUIPC5.x from this site | a non-licensed works |
File #2:: SimConnect.msi >> this file is in your Prepar3D installation folder in the subfolder …\redist\Interface\FSX-SP2-XPACK\retail\lib
Start downloading file #1, #3 and #5 to the standard Windows download location C:\Downloads
Section 2 – The Do’s and Don’t ‘s
 Do not install Prepar3D in the root of any disk, but always in a folder named, like .. \P3D4 or any other suitable name.  Do not install IvAp in the installation folder of Prepar3D  Do not install IvAp in the folder C:\Program Files (x86)  When asked to run any executable which program is used with Prepar3D… always Run the executable as administrator.  Now first write down your situation (disk\folder\) –> You have installed Prepar3D version 4 on disk: ____ –> In a folder on this disk, called: _____
Section 3. Installation of files
3.1 Install File #1:: Check before the installation procedure starts if a previous installation of version of FSUIPC5.x (better than 5.121) is already present in the \Modules folder. If Yes: then you can skip this step, else install File #1 (FSUIPC5 – a non licensed version works.
3.2 Install File #2:: The file SimConnect.msi is in your current Prepar3D installation folder, in the folder \redist\Interface\FSX-SP2-XPACK\retail\lib Locate the file SimConnect.msi Right mouse clicks on the filename and Select Install.
3.3 Creating a dummy fsx.exe: Since IvAp v2 was created for 32 bits FSX and thus natively does not support Prepar3D version 4, we have to create a workaround as follows.  Create a copy of the file Prepar3D.exe (this file is in the root of your P3D4 installation folder) and  Paste this into the same place (the root of your P3D4 installation folder), then…  Rename this copy to fsx.exe and leave it where it is.
3.4 Install File #3:: A folder IvAp v2 is created by the installation of ivap, so do not create this folder manually; just install and point to the root of your P3D4 installation disk
Again: do not install IvAp in, Program Files (x86) nor in the root of your P3D4 installation folder. Now: Right mouse clicks this executable file and install, as administrator in the root of your P3D4 installation disk
We have seen in our website comments, that some users are still persistent in installing Prepar3D, in Program Files. Those users MUST execute step 4.1 as well and then in step 4.2A select the location of the current Prepar3D installation folder, being the subfolder of /Program Files/Lockheed Martin/…
Section 4. Installation of IvAp and TeamSpeak
During the installation you will be asked to browse to the location where you created a copy of Prepar3D.exe renamed as fsx.exe. See again section 3.3 how you did this.
YOU NEED TO FOLLOW THE NEXT STEP 4.1 BY THE LETTER
Step 4.1  Check the box Flight Simulator X  Press the Browse button and find the root of P3D4 installation  Press Next and forget all the warnings. When ready you see this picture as in Step 4.3.
Step 4.2A: We have seen in our website comments, that some users are still persistent in installing Prepar3D, in Program Files… Those users MUST execute step 4.1 as well and then in this step 4.2A select the location of your current Prepar3D installation folder. In that case, this is the subfolder of …\Program Files\Lockheed Martin Here you need to check the box Prepar 3D and browse to the installation folder.
Which Flight Simulator are you using? Step 4.2A is only for those users with an installation in /Program Files/
 Do not check the box Flight Simulator X  Check the box Prepar 3D  Select Browse to find the installation folder of P3D4  Press Next When ready you see this picture as in Step 4.3.
Section 4 – Step 4.3 Installation of IvAp Now you will be asked where the IvAp virtual Pilot client should be installed. Make your life easy and pick a root as high as possible …. so no destination as “disk:/folder/folder” If the path is wrong, you can correct it here once! Select the destination location for IvAp
Section 4 – Step 4.4 Installation of IvAp. The result of your actions are visible in the picture below. What you will recognize is the version number named Microsoft Flight Simulator X with the properties of the prepar3d.exe… and of course: YOU created the copy!  Check & Press Install.
4.5 Installing TeamSpeak with IvAp v2:: During the installation procedure of IvAp, you will pass a screen either to install TeamSpeak, version 2, yes or no. You may want to skip the TeamSpeak installation process when this is already installed. However, it is mandatory to install TeamSpeak with IvAp, so do not skip installing TeamSpeak, else automatic communication with ATC will fail. If there is any single installed TeamSpeak version, uninstall the program first. After installation of TeamSpeak with IvAp, replace the client executable (!). You can do this later. Read our TeamSpeak page.
Section 5. Creating and Configuration of the Multi Traffic Library
Section 5 – Step 1 Download the Multi Traffic Library Note: If you have a previous installed MTL, the files are stored in the root of your Prepar3D installation, in the …\Simobjects\IVAO_MTL folder.
 Delete the current IVAO_MTL folder.
Section 5 – Step 2 Download a new Multi Traffic Library To complete the MTL process:  Press the Download button only; this will fill the folder with only the default models.  Else (!) by pressing FULL INSTALL (recommended) and then the Download button will give you ALL models to download (~10 Gb). The IVAO_MTL folder is created during the process.
Section 5. Step 3 Download a new Multi Traffic Library Directly after the download, the reindex process will start automatically. When the download is completed, check the MTL folder in …\Simobjects. What you get is the latest 32 bits version with a full or default selection of VA’s with the latest models and textures. To make these models useable in the 64 bits versions of Prepar3D, you should overwrite the model folders. These models exist in file #5. Read on, how to process this action.
Section 5 – Step 4 Transfer the new IVAO_MTL into 64 bits –>ONLY VALID FOR P3D4.X<–  In this step we start to overwrite the contents of this IVAO_MTL with the 64 bits model folders. Download the zipped file with this link to C:\Downloads\ http://mtl.ivao.aero/mtl_test/MTLTest-Full-0.1.7z IvAo has deleted the file since the new MTL is pushed in the new Beta client You can find the zip via our Download page in the folder ..\PREPAR3D-Applications\IvAp for P3D\
 Unzip the file. You will create C:\Downloads\MTLTest-Full-0.1\IVAO_MTL\ This additional IVAO_MTL folder contains 368 folders with 64 bits models only. The folder contains models only for P3D4+ and the purpose is to overwrite the initial download IVAO_MTL (in Simobjects) with corrected model files.  NOW PAYATTENTION … In C:\Downloads  Right Mouse on the IVAO_MTL folder and press CTRL+C  Now go to the folder … \Simobjects and Right Mouse on the folder \SimObjects en press CTRL+V  Say YES when being asked to overwrite. Done! Since the IVAO_MTL is changed now, the Reindex process must be repeated.
Section 6. The Reindex Process.
Don’t forget, that after any manual change in this IVAO_MTL folder, you need always to reindex the database. How can you do this?
 Go to the root of your IvAp installation  Right Mouse on the file ivap_config.exe and Run as administrator. You get this picture. There select Online Traffic and  Check Show Online Traffic. Then …
 Press the button Reindex MTL .. Wait until completed (you will see a DOS screen running) and close with OK. Remember that you only can Reindex the database when the IVAO_MTL folder is in .. \SimObjects\
Section 7 – Activating IVAO_MTL in simobjects.cfg
Adding the IVAO_MTL entry in simobjects.cfg  Open the file simobjects.cfg in C:\ProgramData\Lockheed Martin\Prepar3D v4\  Add this text: [Entry.xx] << mind the xx number sequence! Title=IVAO MTL Path=SimObjects\IVAO_MTL Required=True Active=True  Save the file and Close
8. Starting Prepar3D and launching IvAp
Manual Starting IvAp and Configure IvAp  Press your Windows key and go to the folder IVAO; You need to check IvAp before starting the sim:  Run IvAp v2 Configuration and check the General-Visual Style / Skin setting; no blank skin!  Check the box Show Online Traffic;  Press Reindex MTL (every time the MTL has changed);  3rd Party Tools: Check enable IvAp <-> FSUIPC SDK ; then … after this checkup, first start the sim and then start IvAp. Read on.
Starting IvAp  Press Windows Start  Select the icon IvAp v2 – External | More and  Run as administrator. Done ! ===== A 2nd (better) option: Right mouse click the icon IvAp v2 – External and select Add to Start, then Open file location, select Properties and check in the compatibility tab Run as administrator.
After starting IvAp you will find the menu in Prepar3D menu bar (Add-ons). There you can Show or Hide the IvAp popup screen.
Section 9 Moving IVAO_MTL folder
Read first, before you start to execute the next 14steps:  You can only reindex the mtl database in the conventional way when the IVAO_MTL-folder is in …/SimObjects. However you can move this MTL-folder to any disk or folder and keep the reindex feature alive. Continue reading. Reasons for moving? Disk volume capacity (current MTL = ~8,5 GB).
 Create a symbolic link for the IVAO_MTL folder… read on.
 Placing IVAO_MTL into another folder and creating a symbolic link. For whatever reason, you could move the IVAO_MTL folder into another Disk and/or Folder. However, without the possibility to Reindex the database in the conventional way.
 You have 2 options to activate this IVAO_MTL: – Activating the IVAO_MTL through simobjects.cfg (See Section 7). – Activating the IVAO_MTL with an add-on.xml (See Section 10). In both options the Reindex feature in IvAp MUST “see” the location where the folder IVAO_MTL is located. Therefore you must create a symbolic link from the <generic source location> to <the new destination location>. Before we explain both options, first we wil create the symbolic link and move the IVAO_MTL folder to your chosen location. There we go and execute your actions by the words…because it’s critical. There we go!
 Cut the folder ..\IVAO_MTL from …\SimObjects and paste into e.g. F:\IVAO_MTL (write down your own location). Check that it’s gone!
 Press Windows 10 Start button and type CMD and select Command Prompt with right mouse to Run as administrator.
 Creating mklink:: A DOS box will open with C:\Windows\System32> and execute the next typing word by word! Type mklink Type space (hit the space bar) Type /j and a space (so…type forward slash letter j followed by a space) Type a double quote (this is ” )
 Now type the generic source location of the IVAO_MTL folder; this is your P3D installation path of …\SimObjects\IVAO_MTL
 Type a double quote then a space and again a double quote
[10 Now type the new location of your IVAO_MTL folder: e.g as in the sample above F:\IVAO_MTL and close with a double quote.
 Check the paths !! Ready? Look in the picture below before you hit the ENTER !
 Press ENTER
 Double check:: A DOS message (see pic below) will tell you that a junction was created from/to.
 Now we have “linked” the IVAO_MTL and you must decide whether to create other start options as we explain hereafter in Section 10 and Section 11 or just start IvAp manually.
Section 10 Activating IVAO_MTL by add-on.xml
If you want to store the IVAO_MTL on another disk or folder, please use the add-on.xml as provided. Adapt the <Path> as in your situation. In the sample below you will observe that the add-on.xml is placed in the folder: disk:\Documenten\Prepar3D v4 Add-ons\IVAO_MTL and the location of the IVAO_MTL is addressed to <Path>C:\P3D4-AI\IVAO_MTL</Path> Set your own path!
Section 11. Autostart IvAp by the sim with EXE.XML
IvAp auto start by the sim If you want IvAp to start always by the sim, add the following statement into the exe.xml. (See pic below – Line 12 ./. 17) If you’re not a frequent IVAO-flyer … don’t…  You find this exe.xml file in: C:\Users\yourname\AppData\Roaming\Lockheed Martin\Prepar3D v4\  Open the exe.xml with Notepad++ and  Make the changes as in the picture below.  Line 15:: Check your own <Path> ??? </Path>
NOTE: Do not make additions or changes to any dll.xml since IvAp will be started in another way.
Section 12. FAQ and Contact
13.1 Failed to read: When you get a message as below after starting IvAp, check with ivao_config.exe if the Visual Style / Skin: in General is not blank in the drop-down menu! (Tks-JanH) REMEMBER: after starting IvAp with the exe.xml the IvAP module will appear just above the system tray. Drag it to the position you want.
13.2 How to create a new MTL: Now go to mtl.exe and run as administrator. The mtl.exe is in the root of your current IvAp v2 installation folder. The download will start. After downloading, you must follow both Section 5 and Section 6, since you changed the IVAO_MTL-folder completely. === 13.3 I don’t see other pilots airplane … Did you have the port 6810 (or range 6809-6811) forwarded in the router on your fs-pc’s IP-address? === 13.4 Did you see the Firewall screen pop-up during the installation of IvAp? Check the rule incoming connections IVAP on port 6809 === 13.5 Did you copy in C:\ProgramData\Lockheed Martin\Prepar3D v4/simobjects.cfg the Entry .9 into Entry.10 and did not change the line TITLE=IVAO_MTL of the entry?
Send a message to our HELPDESK with any question. If you are uncomfortable doing an installation yourself, we will gladly support you remotely. Install Teamviewer and send us a message with your Skype-name.
On this page we show you how you can use IvAp v2 on a second PC or laptop. To make this configuration work properly, these are the principles:  The flight-pc is called MASTER and runs a Windows 10 operating system with Prepar3D V4+.  The MASTER has a standard IvAp V2 installation as described on this page and configured in IvAp as Single PC.  The 2nd PC or laptop is called SLAVE and runs Windows 10 as well.  On both MASTER and SLAVE your account settings must be the Administrator and the Sign in option is via your Microsoft account. For security reasons you should not use a Local account. (Check: Windows key-Settings-Your info: below the picture NAME-email-address-Administrator)  Both MASTER and SLAVE are connected to the same local area network (LAN) 192.168.x.y.as well as in the same subnet 255.255.255.0
Creating Shared Folders To achieve communication between MASTER and SLAVE we must “share” folders on the MASTER.  The installation folder of Prepar3D and  The IvAp v2 installation folder This is the procedure how it works:
Share the MASTER installation folders of Prepar3D and IvAp v2. The procedure for both are identical. [a] Right mouse clicks on the folder containing the installation of P3D (or IvAp) [b] In the context menu select Give access to and there Specific people. [c] From the Network access screen, select Everyone in the dropdown menu, press Add, select the Permission level to Read/Write and press the Share button to finish this action. [d] You get a screen with the results and remember the Individual items Name and path. (Right mouse click and copy the link into a text file). You will recognize and need this link later on the SLAVE. [e] Now go to the SLAVE, right mouse clicks Select a network location. You get the Add Network Location Wizard. Press Next. [f] Choose a custom network location; Press Next. [g] Now press Browse and wait for the Network overview to show up. [h] Open your MASTER (with your pc name), select the folder to share and press OK. [i] Next-Next-Finish-DONE! [j] Repeat this sequence for sharing the IvAp installation folder.
On the SLAVE [l] Go with right mouse clicks This PC, [m] Select Map network drive, [n] Type the network path you created in step [d]; [o] Check Connect using different credentials and after [p] Pressing Finish you will be asked to fill the Microsoft credentials (username and password) belonging to the MASTER. [q] Remember my credentials will save these on the SLAVE for the future. No luck? Press here.
Note: Working on the SLAVE, you could be asked for your Microsoft account credentials as used on your MASTER, in order to verify access to the network location. No MASTER Microsoft Account (MSA)? You get stuck here. See point 4 above.
In this step we will install IvAp V2 on the SLAVE. Assuming that you have the installation executable in the standard download location on the SLAVE (C:\Downloads), right mouse clicks ivap-v2.0.2-b2773.exe and run as Administrator… Welcome … press Next.
Accept and press Next.
In this step select Multi PC, Slave. Don’t change the IP address and remember that the port number 6811 is not correct. We will deal with those 2 fields later. Press Next.
There you have it! The application is looking for the IP address of the MASTER. Press OK
What is the MASTER’s local IP address? On the MASTER select Start, type CMD and press Enter. You will get a Command Prompt DOS box. In this box type IPCONFIG and press Enter.
Read the local IPv4 Address beginning with 192.168.x.y and type your own in the field Flight Simulator PC’s IP Address Change the SimConnect Master Port as 6810 then press Next.
On this screen press the browse button [ … ] and find the installation folder of your Prepar3D v4 installation. It will look to the fse.exe that you previously created in that folder.
Since you created earlier the Shared network connection you will find here the installation path of your P3D installation.
Yeah, yeah … we know… press OK
Read this information and do as required after the installation of IvAp is completed. Press Next.
Don’t change and press Next.
Don’t change and press Next.
Don’t change and press Next.
Last check. OK?
Let it go …
Let it go …
You know the song ?
Did you mange to create the shared folders and network connections? You should see this on your SLAVE.
Last check before you start .. Open the file SimConnect.cfg on the SLAVE in the IvAp installation folder. Check the IP address of your MASTER flightsim-pc Check the port number for communication.
On the SLAVE open the file as administrator ivap_config.exe Select the line Multi PC Check the box Sow User Interface always on top. Check as in the picture.
Now go to SLAVE and copy the file mtl.dat from your MASTER network location IvAp\data into your local installation folder of IvAp\data
On the MASTER, open this file ivap_config.exe as administrator. Select the line Multi PC Check as in the picture. Ready to go! 1st start Prepar3D and wait for the menu bar to show Add-ons. Now start IvAp as External and as Administrator. IvAp will appear in Add-ons. Don’t touch … !
Last step: Start IvAp on the SLAVE as External and as Administrator. If you dont see this IvAp INIT menu, press Show/Hide on the MASTER.
At the end of the day … you want to have TeamSpeak2 active. You must log in as registered IVAO user and IVAN password. Press Connect and DONE!
FAQ and Known Issues When using IvAp as Multi PC Configuration, the IP addresses of MASTER and SLAVE must be in the same subnet. So, no other routers in between!