Crm Exception: Message: Linked reports cannot be downloaded, ErrorCode: -2147220970
If you are finding that linked reports are failing to display in CRM 2011, and you get the old "Unexpected Error" message and when you look at CRM's tracing you find the message above, check that you have not removed the "Report Type" field from any of the Reports views.
It seems that the CRM team are using this column to launch linked reports and without it when a report is launched will go to link to download.aspx instead of the specified page.
