After 2 days googling I cannot find a solution to the CRI problem not showing up in the web browser, even if many guys out there seem to have the same unsolved issue:
I followed the steps listed in
http://msdn.microsoft.com/en-us/library/ms345254.aspx
and
http://msdn.microsoft.com/en-us/library/ms345225.aspx
and
http://msdn.microsoft.com/en-us/library/ms345230.aspx
to develop and deploy a simple custom report item.
As a result I have now a custom report item that works fine in Visual Studio 2010 but does not show up when rendering the report in a web browser, windows events log saying "Report Server (MSSQLSERVER12) cannot load the CRITest extension." (CRITest is the name I gave my CRI).
I developed the same object in Visual Studio 2008, because I thaught that SSRS 2012 does not support .NET 4.0 (in the ReportingServicesService.exe.config you find SupportedRuntime=2.0). Result: the object cannot be dropped into a report developed with Visual Studio 2010, because the Common7/IDE/PrivateAssmblies needed for Reporting Services has another version number.
Has anyone any good suggestion?
Thank you all in advance
pg