I want to use two linux systems, both are with actual kernel versions: 1) 4.1.3-201.fc22.i686 2) 4.1.4-200.fc22.x86_64 I have a very old 16 bit program which works fine on a 4.1.4-200.fc22.x86_64 but it does not work with the 4.1.3-201.fc22.i686. The error message I see is not very helpful for me: fixme:winediag:start_process Wine Staging 1.7.47 is a testing version containing experimental patches. fixme:winediag:start_process Please report bugs at http://bugs.wine-staging.com (instead of winehq.org). fixme:ole:RemUnknown_QueryInterface No interface for iid {00000019-0000-0000-c000-000000000046} fixme:int31:DPMI_CallRMProc DPMI real-mode call using DOS VM task system, not fully tested! wine: Unhandled privileged instruction at address 0x4600:0x0000ffff (thread 0024), starting debugger... Unhandled exception: privileged instruction in vm86 code (4600:ffff). -auto: cpu_i386.c:468: i386_stack_walk: Assertion `0' failed. winedbg: Internal crash at 0xb77a0bc8 Can anyone give me a hint how to go deeper into the problem to solve it? As I mentioned, it seems only depending of the underlying kernel version of my box. Regards Klaus