Your logs shows two different kind of problems:
- Those with this error line:
IndexError: list index out of range
Are caused by a bug in the scenery AFCAD, likely missing or overlapping or orphaned nodes. I'm sure if you run the scenery through ADE "Fault Finder", it will find many.
- Those with this error line:
exception CREATE_OBJECT_FAILED
Are instead caused by the sim not being able to find Simobjects which are surely installed with GSX. This might be caused by having changed / reverted the FSX.CFG file AFTER GSX was installed, so it's missing the additional Simobject paths that are added by the GSX installer.
Reinstalling GSX using the current FULL installer should fix these.