When logging in, this error message appears (see attachment). This happens in multiple browsers on multiple PC's.
A second bug is that once you login with a certain user name, you can't login with that same name in other browsers / on other PC's (when i am logged out with that user of course).
I have to clear the server/data folder in order to fix it.
Also users stay visible in the list, while they are already logged out (a long time ago).
And... when i try to login now with for example admin, it's logging me in with a different user name. So, it's all very buggy and not working well. I hope you will fix it soon, and add some basic functionality (like different color for different chatters for example).