[rules-users] Problem loading DRL from DSL?

[kissro at lidp.com]

Is there a bug with drools when you try to use a dsl and drl?  I've read
several post where people seem to be getting the same errors as I am.
My drl looks like this:

package com.insurance
expander underwriting.dsl

rule "Low Premium"
   when
       There is a policy
        - for a male
        - with a premium less than 50.00
   then
        Accept the policy;
end

I have this code to read the drl and associated dsl and build a package:

  String drl = "/underwriting.drl";
  String dsl = "/underwriting.dsl";
  PackageBuilder builder = new PackageBuilder();

  InputStreamReader drlInput = new
       InputStreamReader(InsuranceExample.class.getResourceAsStream(drl));
  InputStreamReader dslInput = new
       InputStreamReader(InsuranceExample.class.getResourceAsStream(dsl));

  builder.addPackageFromDrl(drlInput, dslInput);

  RuleBase ruleBase = RuleBaseFactory.newRuleBase();
  ruleBase.addPackage( builder.getPackage() );

When I run the code I get a 'ExpanderException'

Exception in thread "main" org.drools.rule.InvalidRulePackage: 
                           org.drools.lang.ExpanderException at 157aa53
                           org.drools.lang.ExpanderException at 6f50a8
                           org.drools.lang.ExpanderException at 187814
                           org.drools.lang.ExpanderException at 73a7ab
                           org.drools.lang.ExpanderException at 104faf8
                           org.drools.lang.ExpanderException at 1f8c6df
                           org.drools.lang.ExpanderException at 1c86be5
                           org.drools.lang.ExpanderException at 123b25c
                           org.drools.lang.ExpanderException at 92bbba
                           org.drools.lang.ExpanderException at 162dbb6
                           org.drools.lang.ExpanderException at 146c1d4
                           org.drools.lang.ExpanderException at 5f8172
                           org.drools.lang.ExpanderException at 2ba11b
                           org.drools.lang.ExpanderException at 5e179a
                           org.drools.lang.ExpanderException at 15fadcf
        at org.drools.rule.Package.checkValidity(Package.java:408)
        at org.drools.common.AbstractRuleBase.addPackage
                            (AbstractRuleBase.java:288)

Can someone tell me what I'm doing wrong and what the correct code would
be for reading a drl/dsl and building a package and rulebase?  Does
building drl rules from a dsl not work in drools 4.0.1?

Thanks,
Rod