Dave:
First download Impulse, put in your email and password to logon.
After you logon successfully look to see if you can update to 5.5
If you can, do so. That might partially or fully resolve the problem.
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If it doesn't, save all the skins you've downloaded in a different place by copy and rename (if you decided to uninstall).
If you decide you wish to uninstall WB then do it through Impulse by right clicking on WindowBlinds in the My Software tab and choosing "uninstall" but first apply the default classic skin.
Reboot. Uninstall Impulse. reboot.
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If, however, you decide to update to WB7 (which I hope you do) tomorrow morning order it through Impulse. When the transaction goes through, close and reopen Impulse and your new software should be available in the new software tab without having to uninstall Windowblinds 5.x.
OK?