Hi, i have on question. Normaly i play with Serato DJ, Mixemergency and Rane72 without any kind of problem. Last week i installed Rane Seventy-Two Control Panel v1.09 but this was turned down to 1.08. Maybe due my OS X Version 10.11.6 (15G22010) on my Macbook Pro Retina Mid 2015 Last night at a event, my connection between Serato and rane mixer was disconnected and the music was off. I played with the effect mix and changed also some effects before this was happened. The log file for serato shows no USB Dropout. This message was in the terminal log 01.12.19 00:21:56,767 MixEmergency[3274]: b: 59066.882812 01.12.19 00:21:56,767 MixEmergency[3274]: a: 59113.097656 01.12.19 00:22:02,617 MixEmergency[3274]: b: 59113.097656 01.12.19 00:22:02,617 MixEmergency[3274]: a: 59118.949219 01.12.19 00:22:12,726 MixEmergency[3274]: 00:22:12.725 WARNING: 140: This application, or a library it uses, is using the deprecated Carbon Component Manager for hosting Audio Units. Support for this will be removed in a future release. Also, this makes the host incompatible with version 3 audio units. Please transition to the API's in AudioComponent.h. Also for Serato 01.12.19 00:24:33,640 Serato DJ Pro[3242]: 00:24:33.640 WARNING: 140: This application, or a library it uses, is using the deprecated Carbon Component Manager for hosting Audio Units. Support for this will be removed in a future release. Also, this makes the host incompatible with version 3 audio units. Please transition to the API's in AudioComponent.h. 01.12.19 00:24:34,000 kernel[0]: USB Sound assertion in /BuildRoot/Library/Caches/com.apple.xbs/Sources/AppleUSBAudio/AppleUSBAudio-303.3.1/AppleUSBAudioIsocPipe.cpp at line 41 01.12.19 00:24:34,000 kernel[0]: USB Sound assertion in /BuildRoot/Library/Caches/com.apple.xbs/Sources/AppleUSBAudio/AppleUSBAudio-303.3.1/AppleUSBAudioStream.cpp at line 2689 01.12.19 00:24:34,000 kernel[0]: USB Sound assertion in /BuildRoot/Library/Caches/com.apple.xbs/Sources/AppleUSBAudio/AppleUSBAudio-303.3.1/AppleUSBAudioEngine.cpp at line 1325 01.12.19 00:24:34,000 kernel[0]: USB Sound assertion in /BuildRoot/Library/Caches/com.apple.xbs/Sources/AppleUSBAudio/AppleUSBAudio-303.3.1/AppleUSBAudioDevice.cpp at line 1371 01.12.19 00:24:34,000 kernel[0]: USB Sound assertion in /BuildRoot/Library/Caches/com.apple.xbs/Sources/AppleUSBAudio/AppleUSBAudio-303.3.1/AppleUSBAudioDevice.cpp at line 533 01.12.19 00:24:34,000 kernel[0]: USB Sound assertion in /BuildRoot/Library/Caches/com.apple.xbs/Sources/AppleUSBAudio/AppleUSBAudio-303.3.1/AppleUSBAudioDevice.cpp at line 278 Anybody knows what this failure can be? Many thanks for your kind assistance Greets from Germany Mario