Using Visual Studio 2013 with BI I created a SSRS project which I have been successfully deploying for months. This week I created a customer assembly DLL and referenced it in all the project's reports. While this works on my development machine I am unable to deploy it to my SQL Server 2012 server with the following error:
Error rsProcessingError : Error while loading code module: ‘DSSFunctions, Version=184.108.40.206, Culture=neutral, PublicKeyToken=null’.
Details: Could not load file or assembly 'DSSFunctions, Version=220.127.116.11, Culture=neutral, PublicKeyToken=null' or one of its dependencies.
This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded.
I believe this is down to the referenced Microsoft.ReportingService
del. This is version 12 on my development machine but is 11 on the server.