IE is the tried-and-tested solution. Please send me the details of the null pointer exception and I'll look into it.

I'm sorry, but I don't have any experience of Firefox or Safari. But given my general dislike of all things microsoft, it'd be good to get it going on Firefox.

The only thing I suggest on the security side is to add the host-name to trio.xml:

<rmi create-registry="true" host-name="xxxx"/>

The xxxx value should be what you type into your firefox address bar (i.e. "server" if you type http://server:8090/...).

Cheers
Paul