For test purposes I turned off my MCP2 leaving just my Thrustmaster HOTAS and two assignments:
Assigned: Joystick switch 20 NGX APU on and switch 21 NGX APU start
I then started the sim and then LINDA. I stopped the Logging Session after a number of errors printed all the same. Here's a partial copy:
------------ NEW LOGGING SESSION - LINDA 3.0.12.811 --------------
LUA: "D:\Program Files\Lockheed Martin\Prepar3D v4\Modules\linda/system/init.lua": killed
### Blocked: attempt made to change LogOptions via 3400, data 0x0001
FSUIPC logging bit cleared: 2
### Blocked: attempt made to change LogOptions via 3400, data 0x0401
FSUIPC logging bit set: 10
### Blocked: attempt made to change LogOptions via 3400, data 0x0001
FSUIPC logging bit cleared: 6
[E] *** LUA Error: ...D v4\modules\linda/aircrafts/PMDG 737NGX/actions.lua:344: attempt to compare nil with number
[E] *** LUA Error: ...D v4\modules\linda/aircrafts/PMDG 737NGX/actions.lua:344: attempt to compare nil with number
[E] *** LUA Error: ...D v4\modules\linda/aircrafts/PMDG 737NGX/actions.lua:344: attempt to compare nil with number
[E] *** LUA Error: ...D v4\modules\linda/aircrafts/PMDG 737NGX/actions.lua:344: attempt to compare nil with number
[E] *** LUA Error: ...D v4\modules\linda/aircrafts/PMDG 737NGX/actions.lua:344: attempt to compare nil with number
[E] *** LUA Error: ...D v4\modules\linda/aircrafts/PMDG 737NGX/actions.lua:344: attempt to compare nil with number
[E] *** LUA Error: ...D v4\modules\linda/aircrafts/PMDG 737NGX/actions.lua:344: attempt to compare nil with number
Please ignore the strike through lines. I don't know how or why they are there in the post. They do not
appear in the raw copy.
Phil