Problem solved!!!

 

From the LM forum:

 

P3D DOES come with the FSX Simconnect libraries, for the precise reason to allow backward compatibility with FSX Simconnect clients, and they are supposed to be installed automatically.

They are located in these folders

\Lockheed Martin\Prepar3D v2\redist\Interface\FSX-SP1\retail\lib
\Lockheed Martin\Prepar3D v2\redist\Interface\FSX-SP2-XPACK\retail\lib

If for some reason they haven't been installed automatically by the P3D installer, you might try launching the .MSI files in those folders.

 

After installing both simconnects TrackIR worked instantly!

Thanks for digging this solution up Jeroen!  It solved the problem in 2 minutes!

 

I notified Mike at NaturalPoint (TrackIR) who was helping me troubleshoot from their end.  He had other TIR customers who also reported the problem.  I was impressed by their quick response to my support email!

 

   Gavin

After endless searching... This did the trick! Thanks a lot!

Thanks! What worked not at all before now works perfectly.

Thank you. This solved my issue on a first install, and I found you need the latest trackir software too.

Again many thanks for your efforts

Thanks. After 4hrs of troubleshooting I founds this