as reported by some users, in certain cases QMidiArp-0.4.3 crashed with a floating point exception directly on startup when used with JACK MIDI. This exposed only on a few systems, at least one of them AVLinux (unfortunately not mine), but is still a big bug due to a missing initialization.
It is now fixed by a patch that can be found here:
It is applied with
patch -p1 < qmidiarp-0.4.3-fix-transport.patch
Thanks to the two reporters and Robi for the remote access to a system exposing the bug.
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