[rules-users] Drools 5 m4 in IRAD/Websphere

I've read that Drools is compatible with jdk 1.4 but I get the error below in IRAD 6 which is jdk version: java version "1.4.2" Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2) Classic VM (build 1.4.2, J2RE 1.4.2 IBM Windows 32 build cn142ifx-20060307 (142S R4-1 + 98226) (JIT enabled: jitc)) I searched the archives but could not find anything about this. Any suggestions would be appreciated. The java class could not be loaded. java.lang.UnsupportedClassVersionError: org/drools/event/KnowledgeRuntimeEventManager (Unsupported major.minor version 49.0) Thanks Kent