First off, hats off to the devs... great stuff, this.
Using server 1.9b (yes, the right one, heh) and client 1.15.11, I get the "blank screen of death" when I hit Go. My IP is set correctly, I have the support files in the correct location, and I am using the INI file posted for the Nov 25 patch (the one listed in the dev forums).
Any ideas? I had things working fine previous to the patch, but I decided to upgrade the client to .11 and ensure that my server version was up to date, and things haven't worked since.