I just installed the latest official release of BCC on an "older" Win XP machine, and then installed the latest test release over it. I have the drivers working fine (I can connect and communicate with the NXT through USB). I went through and set all the preferences to how they are on my main computer. I can properly compile several programs; however, it's complaining about me using SendRS485String. Here is the error list:
The checkbox for Enhanced firmware is definitely checked, as are the boxes for internal compiler, NXT 2.0 compatible firmware, and automatic firmware version.