Mac:Error log filling up non-stop after trying to import new calendar into Entourage

I followed the steps for importing the new calendar, but now I get a constant error when synchronizing my calendar and the error log is growing each second. I couldn't find where to stop this in Entourage (or is this done in a different program since it was activated by hitting the URL listed for my account/calendar?).

Running OSX 10.6.8 and Office for Mac 2008.

Thank you!