If you did update, don't worry, the developer was informed and made a stop gap that makes the client usable again.
This worked for me as far as I can tell, but I definitely zipped my OrionLauncher folder, just in case, before doing the following.
- Download the installer again. It has the same name as the old one. The developer said that he changed it. The following works when you do, so idk. Not very good update practice.
- Install into your current OrionUO folder. As far as I can tell having checked my settings it only overwrites the Orion stuff, not all your settings and scripts. Again.... make sure you made a backup.
- Go to the following file and delete it. Orion Launcher/bearer/qnativewifibearer.dll.
I am not sure when the fixed update will be released, which is why I put the date in the title.