[Tinyos-help] mig problem - cant find .h file

Hi
I am facing difficulties to generate the class file. Following msg shown:

In file included from /opt/tinyos-1.x/tos/system/tos.h:144:
/opt/tinyos-1.x/tos/platform/telosb/hardware.h:7:25: CC2420Const.h: No such file
 or directory
<commandline>: failed to preprocess /opt/tinyos-1.x/tos/system/tos.h
failed to parse message file /opt/tinyos-1.x/tos/../apps/CmdBase/CmdMsg.h
make: *** [CmdMsg.java] Error 1

Note: platform= telosb (actually tmote)
tinyos=boomerang 2.0.4 and those files are there as mentioned.
Any help will be highly appreciated.

Somoy