Installed 0.5, and the install went just fine. Tested the IMU with the Freescale board and got the following error:
Loading file 'sd:/LIB/DEMOS/IMU/IMU.NUT'...done.
Running nut 'sd:/LIB/DEMOS/IMU/IMU.NUT'.
%%Runtime error [the index 'I2C' does not exist]
*FUNCTION [main()] sd:/LIB/DEMOS/IMU/IMU.NUT line 
Reinstalled version 0.4 and everything still works just fine with the IMU. Reinstalled 0.5 and fail.