As requested here is exactly what the warning is: ANTLR Parser Generator Version 2.7.1 1989-2000 jGuru.com warning: lexical nondeterminism between rules NAME_TOKEN and END_TOKEN upon TermParser2.g:0: k==1:'.' TermParser2.g:0: k==2:<end-of-token> -- Michael Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/