SAM web site error - CS0012

Hello Forum,

Received this error when trying to connect to the SAM web page:

Unexpected Website Error

c:\inetpub\SolarWinds\Orion\ResourceContainer.ascx(10): error CS0012: The type 'BaseViewGroupControl' is defined in an assembly that is not referenced. You must add a reference to assembly 'App_Code.l0x57ldk, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'.

Running Orion Core 2012.2.2, SAM 5.5.0, IVIM 1.5.0.

Any suggestions?

Thanks,

Sky2830