Is that ever a strange error. Try renaming the ARC folder in my documents to ARC.bak

Or disable any virus scanners

I have seen it suggested that a recent update may cause this issue. KB2918614 corrupts MS installer and creates the problem.Uninstalling KB2918614 and rebooting is supposed to fix it.

I tried Richard's idea with the restore point. No luck. I tried changing the name of the folder as DJ suggested. No luck. I would like to try Zap's idea but I can't find KB2918614 to delete. Can you give me any more information so I can give that a try?

I use WIN 7 so I can tell you how to find it there. Go to Control Panel, then Programs and Features. On the left side should be a link to "View installed updates". You can sort them by date installed. Look in the Microsoft Windows section. For me, it installed on 8/19/2014 but we have a slight delay from release to install here at work. It may have been a week or so sooner for you if your updates are auto downloaded and installed.

Zap is the MAN. Loaded without error. Now if I could just get my file back. I have a feeling it is history.

Did you copy your project to the cloud? You should make a habit of it in case something like this happens again....

I did Richard, and that is what I find unusual. It was corrupted in exactly the same way. At that point I assumed that the cloud was updated automatically. It must not if you say so. Also Rich said there was a audio servo in the project that he saw and I never put one in. These last few days have been very perplexing.