PowerCMS error after login
I have just set up POWERCMS locally. I can login but once on the following page I can't do anything, the menu tabs won't work for add new content, home, or edit.
Here's the error:
Webpage error details
User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; WOW64; Trident/4.0; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.30729; InfoPath.2; .NET CLR 3.0.30729)
Timestamp: Thu, 11 Feb 2010 19:23:09 UTC
Message: Invalid argument.
Have have used PowerCMS before but not had this error.
I'm clueless right now, any suggestions?