I added the ICAO aircraft codes to the aircraft.cfg file. That works. No error message.
Regarding the log.txt part; are you referring to the log.txt file in the PSXT folder, if so, it says:
SimConnect: User aircraft title: TFDi Design MD-11 GE CF6-80c
model raw: MD11
SimConnect: User aircraft model: MD11, half wing span: 25.9 meter, category: Heavy
The user aircraft title is the test variant I used. ICAO codes for the MD are: MD11 for the pax version and MD1F for the freighter version.
Roy