Please resist the urge to update to firmware 2.00 if you use PC Remote!
I'll have it working in ShutterSnitch 5.9.2, but it's not ready for release just yet. Hang in there..
ShutterSnitch version 5.9.2 now supports firmware 2.00.
Since there doesn't seem to be a way to tell if the camera is in Select on Cam & Send or PC Remote mode, ShutterSnitch takes the very first shot in PC Remote mode as the hint and switches at that point. This means the first shot won't be transferred though. If you only use PC Remote mode, I've added a 'Force PC Remote Mode' option to the settings. Turn that on and it'll start straight up in PC Remote mode and you won't miss any transfers.
Connecting using authentication is not supported so you will need to turn that off on the camera (Network -> Network Option -> Access Authen. Settings).