Paste Email Plus stops being able paste. I have compatibility mode checked because I am usually pasting into gmail and it seems to require compatibility mode checked. If I reboot the computer, PEP is again working fine, but in a few hours or days, suddenly it will stop working. Right clicking brings up a context menu, PEP is in the context menu with all my pastetext choices, but selecting a pastetext item does not result in any text being pasted. If I uncheck compatibility mode, PEP works on sites that do not require compatibility mode, like this one.
I am using Paste Email Plus V5.0 with Firefox 30.0 on Windows 8.0, though the problem has persisted through a number of Firefox versions. I don't use categories in PEP.