[fabianfred]

I do know that if the map was created using FMB+, and uses objects that FMB+ unlocks (ground plates etc.); then you can't save it with standard FMB.

just to avoid confusion...I think Fishsneaky meant to say ...if the MISSION was created using FMB+...rather than if the MAP was created

as Monty27 says...I probably have all objects on my static.ini (and a few extra ones not released)