Does anyone have any idea what this error means?

Server Error in '/FireWorks' Application.
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Signature of the body and declaration in a method implementation do not match. Type: FTS.CachedFWPermit_5. Assembly: FTS, Version=1.0.2508.14547, Culture=neutral, PublicKeyToken=null.
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.TypeLoadException: Signature of the body and declaration in a method implementation do not match. Type: FTS.CachedFWPermit_5. Assembly: FTS, Version=1.0.2508.14547, Culture=neutral, PublicKeyToken=null.

hi there.. looks like somebody change something that hit the app. do you know if anything happends in the last days???

HTH

Gonzalo

As a matter of fact, something did happen. Our computer technichian was working on one of the servers Friday. So I don't know whether or not that had something to do with it. I keep checking my types and everything seems okay. I don't know what else to do.