Damian to the rescue!

The new irth Launcher can be downloaded at HERE

The launcher must take the place of the old one that is in your Irth Install directory, So Unzip this file and copy over the Launcher in the irth Online Install directory.

 Sorry for the troubles with this, and thanks for your patience.

*UPDATE* We are aware of the issue with people being able to log in and are working on it, it is not broken on the client side as we can see from the logs (as of now) but there is an issue on the patcher side, and we are working on correcting it. If you have the patience you can keep trying and it will work eventually, this is just an issue with the amount of people trying to connect at once.

We are working on it to resolve it as soon as possible.

Damian