I tried creating two sites this morning with the free trial setup on concrete5.org. However I'm unable to log in to the sites I have created (wrong user name and pass error) and any attempt to reset and send a new password results in the following error:

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, root@localhost 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.
Apache/2.2.3 (CentOS) Server at trotscher.c5host.com Port 80