Errors when trying to activate web service

Has anybody encountered an HTTP 500 error while trying to activate a webservice based on a business object from one of the SAP namespaces?
The error that I am getting is: HTTP 500 (InternalServerError) - Dump or unhandled exception in backend.

Yes we have the same Problem. Are you using Association in your BO?
The Problem is known
This was defect in the code while trying to include
Cross Bo associations in Read Operation.
This was fixed in FP26 with Hotfix HZEK001337.
This is not yet imported into VQ3.
Solution: Wait till VQ3 is supplied with this week's hotfixes
or try to generate service without Cross BO associations till hotfix
is imported into VQ3.

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