Hello,
I've had FSX for the past 3 years and it has been installed fine since, even onto the new Windows 7 since.
I've now purchased the add-on pack Acceleration for it and when I run the install, it is fine until it begins to 'caching files' - at the end of the progress bar when it is 'caching files' it then begins to 'Rolling-back action' and completely stops the install and says - "Microsoft Flight Simulator X: Acceleration is unable to complete the install. Please try again later or run setup again."
There is no error message or code and it is does not come up on the 'Event Viewer' - I have tried CCCleaner and trying the install on another account and have also even brought another Acceleration disk but I still have the same problems.
Hopefully someone can help me as it's becoming increasingly frustrating.
Thanks