Could not load file or assembly 'App_GlobalResources' or one of its dependencies.

Hi!
I'm trying to use resource files added to App_GlobalResources and geting the following error.
The framework is 4.0. The application uses DotNetNuke cms.
Intellisense sees the properties in the WebApplicationResources class corresponding lines in WebApplicationResources.resx
I cannot reproduce the error in the simple test website.
Do you have any ideas how to fix it?


Thanks in advance, Dan
The exception text:


Server Error in '/dotnetnuke' Application.
Could not load file or assembly 'App_GlobalResources' or one of its dependencies. The system cannot find the file specified.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.IO.FileNotFoundException: Could not load file or assembly ...