Hallo after lot of helo from Paul i managed to run my FSX without any bigger problems the last month - since 2 days, after I updated Mega Airport FRA to Version 105 i can not start FSX anymore. I receive a fatal error and than a screen is poping up :"This feature requires that (smartassembly) is available on this computer" Even de-installing the update and Mega Airport FRA FSX is not starting anymore....I have found some information about this problem but not one which could help me...any idear ??System :i7Ram 6 GBNvidia GeFroce GTX 275Win 7 64bitor your support thanks a lot in advancehave a great dayWerner

Run a repair install of FSX from DVD 1. Your Simconnect is messed up.

Jimthanks for your fast reply ... i run the repair already ... fsx still not workinghave a great dayWerner

When I was getting that error, it was after messing with P3D, I had to completely reinstall FSX. And that even didn't help, I had to install Windows Install Clean Up, over which I apparently removed the remains and then reinstalled FSX. It was working afterwards.