I forgot to mention the fact that Mixxx was working perfectly just two days ago (the same version). I cleared configuration (file in ~/Library/Preferences and ~/Library/Application Support/Mixx) and did reboot OS X and problem persists.
I found project https://github.com/signal11/hidapi and created additional attachment from the output of hidtest program. They probably had similar issue https://github.com/signal11/hidapi/issues/26 with this API.
I forgot to mention the fact that Mixxx was working perfectly just two days ago (the same version). I cleared configuration (file in ~/Library/ Preferences and ~/Library/ Application Support/Mixx) and did reboot OS X and problem persists.
I found project https:/ /github. com/signal11/ hidapi and created additional attachment from the output of hidtest program. They probably had similar issue https:/ /github. com/signal11/ hidapi/ issues/ 26 with this API.