Two days before, I was flying in FSX and I got a error message called "failed to read from file". After I repaired FSX using the original DVD, that error was solved. I installed FSX-SP1 successful then. However, when I am going to install SP2, the installer did not finish the installation. It said "caching files" then "rolling back action". I've tried to defrag the disk, reboot, and use CCleaner. Nothing helps.I did a research but get no conclusion. Anyone can help me without fully uninstalling FSX?

What is the operating system, David, and where do you have FSX installed?

You probably should have uninstalled SP2 before installing/repairing FSX. Look in your Add/Remove and see if you see SP2 installed (SP1 will not be there, just FSX or SP2 or Acceleration whichever you have installed). If SP2 is there, then uninstall it. Then try a reinstall/repair of FSX, SP1, and SP2.Best regards,Jim

Thanks for replies.I just reinstalled my FSX today. Everything sould be fine right now.