KEMMAPI.dll error when starting Outlook

I recently uninstalled Logitech’s SetPoint software for my mouse from my Windows XP machine. After uninstalling it, I started receiving the following error every time I started Outlook (see image below as well).

The Add-in “Redemption Helper Outlook Extension: (C:\Program Files\Logitech\SetPoint\KEMMAPI.dll) cannot be loaded and has been disabled by Outlook. Please contact the Add-in manufacturer for an update. If no update is available, please uninstall the Add-in.

After searching around the net for a bit, I came across a solution that worked: delete the file named extend.dat from the C:\Documents and Settings\username\Local Settings\Application Data\Microsoft\Outlook folder. Replace username with your username. That solved the problem.