[rules-users] switching off JIT compiler in 5.4.0.Final

Dear List, Does anyone know of a way to disable JIT in 5.4.0.Final? There is a snag in that version that seems to not play nice with my application. If there is a way to disable it then I could just bridge the time until 5.4.1.Final is released. I have tried the following: -Dmvel.disable.jit=true and -Ddrools.permgenThreshold=0 but still the same issue. Thanks, Willem