If this error occurred when using MEF in a WPF application, please ensure that the CopyLocal property of the reference to the MefExtensions assembly is set to true in the main application/shell and false in all other assemblies.?

Hi,

These problem seems very hard to solve. I know know how to fix it by setting "Copy Local to Flase" for those assemblies.

If the Solution consist of more than 100 modules. These is not easy to fix.

Is there any best way to fix these issues?