[antlr-interest] Any tip...

[Lloyd Dupont]

I got this error message:
ExpressionGrammar.g:270:1: The following token definitions are unreachable: MINUS,PLUS

I'm trying with the ANTLR Work interpreter on the command additive:
additive: multiple ((PLUS^ | MINUS^) multiple)* ;

with input like 1+2

and I get just the token one '1' followed by NoViableAltException

any idea of what could be the source of the problem?

I was recompiling regularly but the error just creeped in at an impromptu moment and I cannot remove it now .. :-(
I'm .. puzzled...
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