You may need to totally remove the existing install first. Using the INSTALL/UNINSTALL software from control panel may not be all that is required. I think there are registry lines that have to be removed as well..... best to ask someone who knows about that.... screwing with the registry is NOT something for the uniformed to attempt.... I certainly would not be messing in my registry without specific guidance from an expert on a support call.

Until they open....

I would do a control panel removal and attempt a new install. It may be OK. The worse that could happen is you get the same message. I'm thinking that if you do the new install after deleting the original.... it may replace those missing files and you will be able to complete the installation with registration.

Since it was running.... and it's now saying missing files.... do the reinstall and try it.

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You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.