Strange error V2.0

[Lord Arcia]

While playing I got this message. I was logged out immediately.

[Java Web Start - Unexpected error] - Title bar.
"Unable to launch Illarion Client" - Within the box.
Ok Details. - Dialogue Buttons.

None of the buttons will work. I tried shutting it down through the control panel, and it would not go away. I had to restart my computer to get the message to go away before I could log back in. It isn't a HUGE problem...it worked after I started...I just want to know if there is anything I can change so this doesn't happen again.

Any ideas?

Edit:
If there was another topic with this exact problem...I didn't find it on the first few pages...and if it was...I don't understand German very well.

[Lianis]

I get that occasionally. Try hitting the 'enter' button to get it to go away. The button doesn't seem to register mouseclicks for some reason.

As to why it does that, I have no idea.