I just released StickOS v1.80 for PIC32 and MCF5225x.
The significant features include:
You can find the new documentation and bits here: http://www.cpustick.com/downloads.htm
And the bits for the CUI32 are here: http://www.cpustick.com/downloads/StickOS.CUI32.F512H.v1.80b.elf.hex
And here's a cool example of using strings and I2C to display the temperature on an LCD display: http://www.cpustick.com/examples.htm#ex2
Note that to use this on Windows, you need to install an INF file (the CDC/ACM driver comes right from Microsoft) www.cpustick.com/cpustick.inf -- just save to a file, right-click, and select Install, and you're ready to go!