So my problem here is two-pronged, which I'll get to in a second. First off, I'm using the TalonRO private server, which worked beautifully when I installed it back in 2010. Fast-forward to now, and I have the problems I mentioned: Problem A, when I start the patcher, the patch screen and latest news show up just fine for about 8 seconds, then I get the somewhat bizarre error message "Floating point division by zero" and the option to send or not send an error report. Problem B, if I click to start the game before the error message pops up, I can see the login screen and hear the login music, but the mouse isn't moving and I can't control the menu. I cannot quit either, and have to terminate the process to quit.
Thanks in advance to anyone who tries to help.