Hi,

It looks like the general issue after the MS security update MS11-100. This security update limits the max number of form_keys to 1000.

When opening the report in the Web Browser and you select the 'Select All' and the browser informs you with 'completed with error on page' is a symptom of this issue.

See also http://support.microsoft.com/kb/2661403/en-us

You solve this by adding the following line in the web.config file of the ReportManager in the "appSettings" section.

<add key="aspnet:MaxHttpCollectionKeys" value="3000" />

Choose a value that meets your needs

Regards Kees