I'm getting an ANTLR exception when parsing a DRL file. The expression is: eval(Distribution.getDistributionHex("5332"). isSuitDistributionMatch(dh.getSuitDistribution())) Split over two lines so that I can post. NoViableAltException(-1!=[685:3: ( ( (LT|GT|LE|GE) shiftExpression )* | 'instanceof' typeSpec )]) I think this was working in the previous version of JBoss rules, I'm now running 3.1 M1. Thanks, John