I have this error when trying to open ANY program on my other computer. When rebooting there was an update which had issues installing. I tried to look up the answer to this problem and I found something about inserting Windows 7 CD and then rebooting and instead of instal, to click on repair. (I have the CD but I don't think it's the same CD that I used originally to install windows). Although the repair option doesn't appear anywhere and Just goes through the regular instalation steps.