Thanks for all the help. I have tried running it in Windows 7 compatibility mode but no joy. When I look at appcrashview it did crash with a Visual.Basic fault. That's the only module that sticks out in the report.

 

I ran AIO that was requested by Aerosoft. It installs all run times etc in one package.

 

I will try changing permissions when I'm off work and see how that goes.

 

Thanks.

Will probably make no difference in this case but worth doing, maybe the program has trouble writing to a file. It's no big deal adding the modify permission for the users group on installed folders, since we become a member of the Users group when we log into the PC, and some addons do write data there. If we installed the sim on another drive or folder we made, we got full access to it since we made the folder it belongs to us. But it still only belongs to us and so some addons or programs can find problems down the road, or if a problem arises within the profile at some later date.