I am attempting to write my own data extension for SSRS 2008 r2. I have created a very basic extension that should just return a simple dataset based on this example. I followed the deployment instructions here and used this sample for reference.
In BI Dev Studio I can create a Data Source using my new Type (AS) and create a dataset using the source. When I type a query and click OK, I get this error message:
The selected data extension AS is not installed or cannot be loaded.
Verify that the selected data extension is installed on the client for
local reports and on the report server for published reports.
I’ve checked over my config files many times and tried adding the ‘CodeGroup’ before, after and within the existing CodeGroups since the instructions aren’t very clear without success.
I have signed my assembly and put the dll in C:\Program Files (x86)\Microsoft Visual Studio 9.0\Common7\IDE\PrivateAssemblies and C:\Program Files\Microsoft SQL Server\MSRS10_50.MSSQLSERVER\Reporting Services\ReportServer\bin. I’ve also done lots of googling.
I’m not sure what other information would be useful. Any suggestions?
Thanks.
Make sure that you are compiling your data extension to target .NET 3.5. This resolved some similar problems I encountered a few months ago.