I may have solved my problem maybe, for now. After many other actions I erased all of FSUIPC, again downloaded FSUIPC from the website, installed FSUIPC, then erased the FSUIPC .ini file. Everything works correctly. Also as a bonus my Thrustmaster HOTAS dual throttles now work correctly as independent throttles should work, even on my Aerosoft Airbus! I am not sure what has transpired. But I have learned how important FSUIPC is the flight simming, thank you Pete Dowson!
I had to have my boot SSD reformatted and the operating system reinstalled. I had P3D on another SSD and it worked correctly. Unfortunatly the tech erased that drive. So I reinstall P3D with a fresh reloaded from the P3D web site ver 2.5.12945.0 It ran correctly. I then reinstlled Aerosoft's A319/320/321, it too ran correctly. I then reinstalled the current FSUIPC from the web site, ver 4.945. It said it installed correctly. But P3D crashes after 10 to 22 seconds.There is a message as P3D boots up but it only lasts about half a second. If I remove the FSUIPC entry from the DLL file iP3D works correctly. The event viewer says :Faulting application name: Prepar3D.exe, version: 2.5.12945.0, time stamp: 0x55145f5e Faulting module name: MSVCR100.dll, version: 10.0.40219.325, time stamp: 0x4df2be1e Exception code: 0xc0000005 Fault offset: 0x0001d419 Faulting process id: 0xb94 Faulting application start time: 0x01d0fa2254b20219 Faulting application path: H:\Prepare3D\Prepar3D.exe Faulting module path: C:\Windows\system32\MSVCR100.dll Report Id: ab7b38fa-6615-11e5-860f-5404a63e4607 I have read the articles about Microsofts Trust registry entry and did use regedit to look but the entries don't match anything in the article: (Default) REG_SZ (value not set) State REG_WORD 0x0023c00 (146432)