I have a 32-bit Windows 7 machine with Microsoft Office 2007. Excel will initially copy and paste just fine, but eventually and rather quickly it will begin throwing an error: "Cannot open clipboard". This happens even when copying a single cell. Trying to "Undo" an action seems to cause this problem faster and more frequently.
I have disabled all add-ins. Clearing out the %temp% folder seems to resolve the issue in the short term but eventually the problem resurfaces.
Any information on this issue is appreciated.