[asheshouse]

I would guess that the problem is with stationary.ini or technics.ini files.
Static Aircraft Mod overwrites these.

Do a search for these before installing Static Aircraft mod.
Keep copies of any you find.

Install Static Aircraft mod. If things now don't work then search again for the ini files.
You should only have one of each.

Make copies again.

Use WinMerge utility to compare/merge the files.
Any entries in your old files which are not in the new ones need to be copied across.
WinMerge is good for this task.

Keep a copy of a set which works