Hello, yes, I was the topic starter.
The problem is related to having multiple MIDIClientRef’s in your app - that crash happening when you have multiple MIDIClientRef’s and you are trying to release them. While I investigated on the issue, it came out the having multiple MIDIClientRefs is a design issue anyway, so removing them and manage only one fixed the problem. Best, Tamas > On 19 Oct 2015, at 19:45, Rick Cohen <[email protected]> wrote: > > There is a crash which was reported in the developers forum during El Capitan > beta. > > https://forums.developer.apple.com/thread/14477 > <https://forums.developer.apple.com/thread/14477> > > The crash is still occurring in the release version of OS X 10.11. For me, > the method to reproduce the bug is to disconnect a USB keyboard while running > a program which is using this type of callback (the program that I am using > to test is in beta). > > Has anybody else seen this, and knows of a workaround? > > Thanks very much, > > - Rick >
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