Installation completely broke my site!!!!!

when installing this plugin & activating it, my site completely died... had to uninstall the thing from an ftp server, i couldnt even access the admin dash anymore...

this was the actual error

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 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.

any idea's ?