accessing mysql within on-rev

[Jim Lambert]

Hi,

I have created a mySQL database on on-rev and can successfully access it using the LiveCode IDE:
put revOpenDatabase("mysql", "myaccount.on-rev.com", "mydatabase", "myuser", "myuserspassword") into DB

But when I try to access it from the on-rev server itself, like so:
put revOpenDatabase("mysql", "localhost", "mydatabase", "myuser", "myuserspassword") into DB

I get this:

<Internal Server Error

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

Please contact the server administrator, webmaster at myaccount.on-rev.com 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.>

What silly mistake am I making?

Thanks,
Jim Lambert