This error usually occurs when the “GMetrix Templates Directory” is not set to C:\TEMP. To correct the problem please update the settings as described below.
From Microsoft Website
What should I do if I find a content error?
If you find an error in the content, check for an existing report in the Knowledge Base at http://www.support.microsoft.com/. You can search using the course title. If the error is not in the Knowledge Base, send an email message with detailed information to email@example.com so that we can investigate the problem. We appreciate your feedback.