Rapid Clone adcfgclone.pl Error

$ perl adcfgclone.pl appsTier oracle/crpappl/admin/ORACLE_APPSTIER.xml
Enter the APPS password [APPS]:

Running Rapid Clone with command:
perl oracle/crpcomn/clone/bin/adclone.pl java=oracle/crpcomn/clone/bin/../jre/1.3.1
mode=apply stage=oracle/crpcomn/clone/bin/.. component=appsTier
method=CUSTOM appctxtg=oracle/crpappl/admin/ORACLE_APPSTIER.xml
showProgress contextValidated=false

Beginning application tier Apply - Tue Apr 21 03:03:17 2009
Log file located at oracle/crpappl/admin/ORACLE_APPSTIER/log/ApplyAppsTier_04210303.log
RC-50004: Fatal: Error occurred in ApplyAppsTechStack:
Cannot proceed with ApplyAppsTechStack-the paths/ports in the context file are not valid

ERROR while running Apply...

ERROR: Failed to execute oracle/crpcomn/clone/bin/adclone.pl