Collectible Card Game Headquarters

I'm having trouble accessing Xmage at the moment. Apparently it is something about Java. Unfortunately i can't post the error message because this forum keeps saying

Your post looks too spamy for a new user, please remove off-site URLs.

So could anyone explain to me how i can fix it or at least upload the error message so people can help with it?

Update:the error message on the client says

could not find main class:mage.client.mage frame. Program will now close.

Sounds to me like java is not properly installed.
Uninstall and make a fresh install.

To post attachments here you need at least 5 posts.
So make 5 empty posts to be able to post the image.