I have a custom data processing extension that i can't see to get to work. I followed the steps like in :http://msdn.microsoft.com/en-us/library/ms155086.aspx to register the extension. Yet the extension does not show up in the data source list.
It's an extension made for ssrs 2008 and I want to use it on a SSRS 2008R2 instance. I don't have any reasons to believe that I did not configure the extension correctly, it's the same as the article and and the same on my 2008 instance.
I am using Reporting Services standard edition 2008 R2 with cumulative fix patch 4 so that should support extensibility.
The data sources that I migrated from 2008 that still refer to the extension give a message saying that the extension is not registered or configured correctly. But i swear I did it right.
Any other extension that I use did register fine, none of them are DPE's though.