Help with user creation

I was trying to create a user, using a template I put together and when I went to creaet it I got this message back in my browser;

HTTP Status 500 - Dispatch[/UserManagement] to method createUser returned an exception

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type Status report

message Dispatch[/UserManagement] to method createUser returned an exception

description The server encountered an internal error (Dispatch[/UserManagement] to method createUser returned an exception) that prevented it from fulfilling this request.

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Apache Tomcat/5.0.28

Anyone know where I should start troubleshooting?

Should ADManage be installed on the domain controller to allow it local control, as I'm using it on a different server currently with an mmc snapin.

Thanks