FYI, I've made a lot of bugfixes and improvements to the simulator, so if you've installed it you'll definitely want to upgrade. Some improvements include:
- Working watchdog support
- SmartDashboard communication
- More WPILib features supported
- Various bugfixes and improvements
Team 1418 has been using this for development and it has definitely helped our students debug problems before they ever get to running code on the robot. If anyone else is using this, I'd be interested in knowing.