[Tinyos-help] "launchall.sh" error

[Zhao Stephen]

Dear all,
I am new to "Cricket". Now I perform demo according to manual.
After "cricketd" is running, I start the command line "launchall.sh".
But some errors appear as following.

>>>>>>>>>>> Simulation Mode
Exception in thread "main" java.lang.NoClassDefFoundError: beaconconfig/BeaconCo
nfig
Exception in thread "main" java.lang.NoClassDefFoundError: beaconfinder/BeaconFi
nderApp
Exception in thread "main" java.lang.NoClassDefFoundError: cricketdaemon/Cricket
Daemon

Please help me out. Thanks.