Arduino 0008 suddenly won't launch - WinXP

Actually I was able to get it going with run.bat.

But I still can't get the arduino communicating with Max...

Where this all became apparent was when I couldn't get the Arduino to talk to Max (after using it for several days straight with no problems) so I decided to re-flash the arduino which led to the discovery that arduino.exe wouldn't launch.

The other things attached to USB port are an iLok key for ProTools, one for Cubase, a wire to my printer and then a USB hub with various wires coming out for cameras, etc.

I haven't even checked ProTools or Cubase yet - I wonder if I screwed up my all my USB settings with those port sniffer installs/uninstalls. This could turn out to be a long night. Any tips on how to reset these all quickly?