CRM 2011 Report 404 Before Redirect

Hi CRMGuru,

Here is my question:

Open report (Customs and Default Report as well)

HTTP 404 took place

Catch from fiddler GET /crmreports/viewer/%22%20+%20Mscrm.CrmUri.create(%22/_static/blank.htm%22).toString()%20+%20%22 HTTP/1.1

After a while report displayed.

Please help.

Thank You.