Webpage error details
User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; GTB6.6; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0)
Timestamp: Thu, 20 Jan 2011 10:53:02 UTC
Message: Object doesn't support this property or method
I've fixed the error that you described and have uploaded a new version of the add-on to the C5 marketplace:
Let me know how you go.