You're going to give a little more information, such as the DRL you're unable to compile.

2012/1/18 mujoko mujoko <mujoko.mujoko@gmail.com>
Hi Drools Users,

I'm new member, Mujoko.
I got issue regarding my rules. Several times got exception when trying to
create KnowledgeSession. I used drools-core 5.3.0.Final and drools-compiler 5.3.0.Final.

java.lang.ArrayIndexOutOfBoundsException: -1
       at org.mvel2.asm.Frame.merge(Frame.java:1373)
       at org.mvel2.asm.Frame.merge(Frame.java:1350)
       at org.mvel2.asm.MethodWriter.visitMaxs(MethodWriter.java:1282)
       at
org.drools.rule.builder.dialect.asm.ClassGenerator$MethodDescr.write(ClassGenerator.java:480)
       at
org.drools.rule.builder.dialect.asm.ClassGenerator.generateBytecode(ClassGenerator.java:50)
       at
org.drools.rule.builder.dialect.asm.ASMEvalBuilder.createEvalBytecode(ASMEvalBuilder.java:63)
       at
org.drools.rule.builder.dialect.asm.AbstractASMEvalBuilder.build(AbstractASMEvalBuilder.java:49)
       at
org.drools.rule.builder.dialect.asm.AbstractASMEvalBuilder.build(AbstractASMEvalBuilder.java:15)
       at
org.drools.rule.builder.GroupElementBuilder.build(GroupElementBuilder.java:65)
       at org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:80)
       at
org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:2289)
       at
org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:822)



--
Mujoko
http://www.linkedin.com/in/mujoko


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