   Well, for 5.0 we rewrote the parser from scratch with much improved error messages... :)

   Anyway, in your case, are you using DSL? I saw this error before when someone was using a DSL, but calling the DRL API. I.e, they were doing:

builder.addPackageFromDrl( drlsource );

   instead of the correct (when using DSL):

builder.addPackageFromDrl( drlsource, dslsource );

   []s
   Edson

2008/8/19 samd <sdoyle_2@yahoo.com>

Alright so I'm new to Drools and I get this error message.

[testng] org.drools.rule.InvalidRulePackage: [0,-1]: unknown:0:-1
mismatched token: [@-1,0:0='<no text>
,<-1>,0:-1]; expecting type RIGHT_PAREN

What is this supposed to mean?

The Drools editor in Eclipse does not show any errors.
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Edson Tirelli
JBoss Drools Core Development
JBoss, a division of Red Hat @ www.jboss.com