GTN750Xi shows only black screen in all aircraft

[TacomaSailor]

In all the aircraft using  GTN750NXi I see the correct bezel and knobs but a black screen.  I am a long time user of the TDS GTN stuff.  The A2A Comanche, JPL 152 and Cessna 414AW were both working perfectly with the TDS 750 the last time I flew them - probably just after New Years.

I've attached a screen shot of the WASM debugger


 TDS GPS manager says I am current at version 1.0.3.7 for the sim and 3.6.4.0 for the trainer.

When in the sim/Dev Mode I see that two TDS packages are mounted and registered:
tds-gtnxi-gauge (version 1.0.11) and tds-gtnxi-jpl_c152 (0.1.0 ). Here 

Here is the log from the TDS module during a flight with the JPL C152 and a black GTNXi750 screen:
[19/01/2024 15:00:05.670 00002578 INFO] TDSGTNXiFlightSimEXE.exe version 1.0.3.7
[19/01/2024 15:00:06.034 00004f50 INFO] Got Version: 9
[19/01/2024 15:00:06.036 00004f50 INFO] GTNProxy::Open Services DLL Version: 1.0.3.7
[19/01/2024 15:00:16.453 00004f50 ERROR] ^^^ GTNProxy::Open Error starting process C:\ProgramData\Garmin\Trainers\GTI\Production\GTI__GTN_Xi__20_30\app-20.30.8\bin\GTN_Simulator.exe
[19/01/2024 15:00:16.453 00004f50 ERROR] Error closing program: 299
[19/01/2024 15:36:16.257 00000e08 INFO] Received Simconnect Quit
[19/01/2024 15:36:16.377 00000e08 INFO] Closing program automatically with MSFS
[19/01/2024 15:36:16.475 00002578 INFO] Ending EXE Process

Here the TDS GPS Manager log and the .exe log:
[20/01/2024 17:13:01.853 0000275c INFO] TDSGPSManager.exe version 1.0.1.0
[20/01/2024 17:13:01.854 0000275c INFO] MSFS Double Install: 0
[20/01/2024 17:13:01.854 0000275c INFO] MSFS Community Folder: 1 and I:\SteamLibrary\steamapps\common\MicrosoftFlightSimulator\Packages\Community\
[20/01/2024 17:13:01.855 0000275c INFO] MSFS LocalState Folder: 1 and C:\Users\svmir\AppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalState\
[20/01/2024 17:13:01.855 0000275c INFO] MSFS TDS GTNXI Gauge Folder: 1 and C:\Users\svmir\AppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalState\packages\TDS-GTNXi-Gauge\work\
[20/01/2024 17:13:01.856 0000275c INFO] MSFS LocalCache Folder: 1 and C:\Users\svmir\AppData\Roaming\Microsoft Flight Simulator
[20/01/2024 17:13:01.856 0000275c INFO] Set CDD: 1 at path: C:\Users\svmir\AppData\Local\Temp\TDS\Temporary\
[20/01/2024 17:13:01.857 0000275c INFO] Set CID: 1 at path: C:\ProgramData\TDS\Trainers\
[20/01/2024 17:17:06.990 0000275c INFO] Exiting WinMain

[20/01/2024 17:09:42.439 00006388 INFO] TDSGTNServices.dll version 1.0.3.7
[20/01/2024 17:11:18.129 00006388 INFO] Ending Process

ALL my test flights are with NO addons except those necessary for A2A, Navigraph, Flow Pro, FSLTL