[rules-users] working with version 5.0

hello, i work with drools guvnor and expert version 5.0.0. I hat the problem with stateless session in comibnation with rule flow componentet. So i use stateful session and build a second delete ruleflow to delete all objects in memory. Is there a better solution? I installed v. 5.2 but the import of the repository from 5.0 caused many compilation problems. Is there a workaround? I'm interested in working with GWT and fix some little bugs of Guvnor V 5.0. Is there a good guidence to get started?