Crash on selecting midi device

Ok, so Rack crashes every time I try to select a midi input device on the MIDI-CV module. I just installed for the first time, so this is with the default rack setup. Everything seems to work. I get sound, after selecting an audio output device, with the QWERTY driver. I can switch to windows MIDI. But as soon as I try to select my midi controller (oxygen49) I get a crash. Running Win10, newest version of Rack.

contents of the log, starting from the crash:

‘[408.431 fatal src/main.cpp:45] Fatal signal 22. Stack trace: 26: ZN4rack10appDestroyEv 0x456435 25: raise 0xf5b2ac60 24: abort 0xf5b2f270 23: ZN9__gnu_cxx27__verbose_terminate_handlerEv 0x6fc5f170 22: ZN10__cxxabiv111__terminateEPFvvE 0x6fc581b0 21: ZSt9terminatev 0x6fd302b0 20: _cxa_throw 0x6fd39080 19: ZN7MidiApi5errorEN11RtMidiError4TypeENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE 0x733d52 18: ZN11MidiInWinMM8openPortEjRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE 0x7366e2 17: ZN4rack12RtMidiDriver14subscribeInputEiPNS_4midi5InputE 0x74b050 16: ZN4rack4midi5Input11setDeviceIdEi 0x48080c 15: ZN4rack2ui8MenuItem8doActionEv 0x4a49ae 14: ZN4rack5event5State12handleButtonENS_4math3VecEiii 0x4576c8 13: ZN4rack7updater17isUpdateAvailableEv 0x45914e 12: glfwPlatformUnlockMutex 0x4d78ae 11: CallWindowProcW 0xf55a5850 10: CallWindowProcW 0xf55a5850 9: glPushClientAttrib 0xd4873770 8: CallWindowProcW 0xf55a5850 7: DispatchMessageW 0xf55a5410 6: glfwPlatformPollEvents 0x4daf66 5: ZN4rack6Window3runEv 0x4594ea 4: main 0x781840 3: main 0x781840 2: main 0x781840 1: BaseThreadInitThunk 0xf5247bc0 0: RtlUserThreadStart 0xf642ce30’

Is there some other software accessing the midi device? E.g. config software? Most common cause is the midi device can’t be shared, and there’s something else using it.

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If you shutdown other apps trying to read Midi from that source, Rack should stop crashing :slight_smile:

Ah, of course. I’ve had Ableton Live running this whole time. Thanks

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