Deploy errors when deploying reports having external assembly references

Question

Hi,
I’m trying to move our Reporting Services files into the new BI Report Server Project in VS2010 / Data Tools 2012. This project type seems to work well  - except that I’m having problems using the deploy functionality for reports with references to external
.Net assemblies. No matter how I try, deploy function results in errors even though I can manually upload my reports (using Report Manager web interface) and successfully execute them.
Using a simple test report, containing nothing else than a textbox with the following expression:
=TimeZoneInfo.ConvertTime(DateTime.Now, TimeZoneInfo.Local, TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time"))
and a reference to a version 3.5 System.Core dll (set in report properties->References) like this:
System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
deploying this report results in an error “The definition of the report '/Report1' is invalid.”. Preview (using .Net 4) doesn’t work as “[BC30560] ‘TimeZoneInfo’ is ambiguous in the namespace ‘System’”. However, a manual upload via Report Manager yields no
errors and works fine.
 If I Remove the reference to System.Core I get another deploy error “The Value expression for the textrun ‘Textbox1.Paragraphs[0].TextRuns[0]’ contains an error: [BC30451] Name 'TimeZoneInfo' is not declared” which I guess makes sense since TimeZoneInfo
is not part of .net 2.0 which seems to be used by the Report Server. But, removal of the this System.Core reference makes preview in SSRS work again.
It seems like the deploy functionality if SSRS/Data Tools doesn’t consider the external report references, but preview does. Has anyone worked around this? I’d really like to use the deploy functionality. Also, using SQL Server 2012, is it not possible to have
report server using a later CLR version than 2.0 for expressions and custom code?
Microsoft Visual Studio 2010 Version 10.0.40219.1 SP1Rel
SQL Server 2012
Microsoft SQL Server Data Tools   10.3.20225.0
Microsoft SQL Server Reporting Services Designers  Version 11.0.2100.60
Thanks

Answer 1

Hi,
I'm having the exact same problems.
I even tried copying the System.Core 4.0 DLL to %PROGRAMFILES%\Microsoft SQL Server\MSRS11.MSSQLSERVER\Reporting Services\ReportServer\bin. In that case, I get the following error when attempting to deploy the report to my local report server instance:
Error 1 Error while loading code module: ‘System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089’. Details: Could not load file or assembly 'System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'
or one of its dependencies. This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded.
If anyone has any idea how to resolve this, please help.
Thanks!