If both the BSP for AT91SAM9M10EK and the BSP for AT91SAM9263EK are installed, the compilation for projects based on AT91SAM9M10EK will fail for there are both sources and dirs in PLATFORM\COMMON\SRC\SOC\ATMEL\COMMON\DRIVERS\LCDC directory.

Hi johnxliu,

When you work with different versions of BSP, the best solution is to install each one in separate folders instead of the WinCE600\Platform folder. After, to generate images, you must use junction mechanism on NTFS (with 'junction.exe' or more friendly with 'NTFS Link') to deceive WinCE.
With this trick, you can easily switch between BSP's. Here, at Adeneo-Embedded, we use it everyday.

HTH

If this answer solves your problem, please edit the subject of this post by adding [Solved] at the beginning of the subject.