Deserialization failed: The type initializer for 'Microsoft.ReportDesigner.Drawing.Language' threw an exception. Line 182, position 4.

Today when i was trying rto open a existing Report Server Project, encountered this error message

Error Message:
One or more errors encountered while loading the designer. The errors are listed below.
Deserialization failed: The type initializer for Microsoft.ReportDesigner.Drawing.Language threw an exception. Line 182, position 4.

The problem was resolved after deleting the {Language}en-US{/Language} line.

To confirm, I just closed the project after deleting above line and re-opened, It worked fine.

Below are the version info of VS I have used:

Microsoft Visual Studio 2005
Version 8.0.50727.42 (RTM.050727-4200)
Microsoft .NET Framework
Version 2.0.50727

Installed Edition: IDE Standard

SQL Server Analysis Services
Microsoft SQL Server Analysis Services Designer
Version 9.00.3042.00

SQL Server Integration Services
Microsoft SQL Server Integration Services Designer
Version 9.00.3042.00

SQL Server Reporting Services
Microsoft SQL Server Reporting Services Designers
Version 9.00.3042.00

I assume that there was some settings change in the language options in this machine... Just shared incase it may help you!