I have this problem only in the option window from Outlook 2007 when I go the the Register “Power Archiver” with the PowerArchiver for Office Plug-In 3.04.
When I use the PowerArchiver Outlook Plug-In 2.4 I don’t have this problem.
The rest works very fine. I use Windows 7 Ultimate 64-bit and Power Archiver 17.00.90 64-bit.
And there I haven’t any problems.