Thanks for reply. Site is working fine with latest WP Version 4.5.3 and BD 3.7.5 and hosted on 1and1 shared wp hosting.
When update latest BD, file is not accessable and giving this message.
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, 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.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
