Error in Business Logic Handler

I am getting this error at Subscriber end. Please help.

"Error loading custom assembly "C:\Program Files\Microsoft SQL Server\100\COM\ZIMSReplicationBusinessLogicModule.dll", Error : "Could not load file or assembly 'C:\\Program Files\\Microsoft SQL Server\\100\\COM\\ZIMSReplicationBusinessLogicModule.dll' or one of its dependencies. The given assembly name or codebase was invalid. (Exception from HRESULT: 0x80131047)".