Error when running report 1

[eprice2]

When I select all items in a drop down menu field, I'm getting the following error:

"Operation is not valid due to the current state of the object."

If I select items at random, the report runs fine. I'm not sure where to look to see what is causing this error. This error is through the web browser. I can select all fields and items in Visual Studio and it runs fine.

I have dozens of other reports that are running without error through the web interface of the reporting server.

I have SQL 2008 SP3 running on Windows 2008.

 

[eprice2]

Found the fix. A security update from microsoft caused this. Added the following to the web.config file for the report server:

<appSettings>
<add key="aspnet:MaxHttpCollectionKeys" value="5000" />
</appSettings>

Found the solution here:

http://forums.asp.net/t/1755767.asp...+due+to+the+current+state+of+the+object+Error