In the beginning the Flight wa running just ok. Then I decided to give some money to MS and buy the Hawai Adventure and flight begun to crash on start with this error:

Unable to write cache file" LocalAppData\Scenery\SceneryIndexes\Filelist00002. You must log on as a user with write permission. Destination drive may be full od set to read-only, or a file with the same name may already exist. Microsoft Flight will now exit.

I have tried anythig I could think of, but nothing worked. Tried to reinstall Flight, but am gettin an error at that point too (a different one). By passed by manually extracting the cab, installed the game, getting the same error. Is there anything I could try short of system reinstall? Thank for all your advice in advance!

You have enough space, that is a given.TryStart the GFWL Marketplace Client as an AdministratorTurn off Usear Account ControlRun a CheckdiskSee if that works