Hi, Just chucked 10.0-R onto an ERL here, already hit a trapframe panic when building several ports, IIRC these were fixed before? panic: kernel stack overflow - trapframe at 0xffffffff80753eb0 cpuid = 0 Uptime: 16h59m55s Don't have debugging on as the CPU is already slow enough :) Can boot a witness/whatever enabled kernel though if required... Thanks, Joe