Ok. I will upgrade my core and hardware. I am on 1.29 and 3.7. One last question: Rogue64 is dependent upon using the SID function for random number generation. Could it be that you have an ArmSID or some such SID replacement in you U64 that doesn't have the SID rng function? If so, could you try disabling the SID sockets and see if that helps? 🙂