Enfold with bbpress 2.5

Hello,

if i use enfold with bbpress 2.5 i receive an error during using the widget.php:

500 Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, [no address given] and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.

somebody has an idea what could be wrong?

Thanks
Guido