Example below. CompilerConfig.addConditions collects conditions to local variable only, but RulesEngine.analyzeCondition() is looking for ref conditions using RulesEngine.getCondition(refid). RulesEngine.getCondition(refid) use protected static RulesEngine.conditionsmap which is empty - so refconditions isn't resolved. <conditions> <condition type="packselection" id="sdkpackcondition"> <packid>sdk.pack</packid> </condition> <condition type="packselection" id="serverpackcondition"> <packid>server.pack</packid> </condition> <condition type="packselection" id="serverdbpackcondition"> <packid>server.db.pack</packid> </condition> <condition type="packselection" id="clientpackcondition"> <packid>client.pack</packid> </condition> <condition type="or" id="copycondition"> <condition type="or" id="copyconditionint"> <condition type="ref" refid="sdkpackcondition"/> <condition type="ref" refid="serverpackcondition"/> </condition> <condition type="ref" refid="clientpackcondition"/> </condition> <condition type="or" id="processcondition"> <condition type="ref" refid="serverpackcondition"/> <condition type="ref" refid="serverdbpackcondition"/> </condition> </conditions>