USB Midi Mate not working

Hello,

Whenever I plug my USB Midi Mate inside my mac, it shows up as available in the midi interfaces very briefly. Then disconnects.

The very same USB Midi Mate works fine on other Mac running the same OS X version.

Whenever I plug it in the USB port I can see the follwing in the console.

Any idea?

24/10/2015 20.20.34,000 kernel[0]: 115873.764552 StandardUSB::validateEndpointMaxPacketSize: USB 2.0 5.[5|7].3: endpoint 0x81 invalid wMaxPacketSize 0x0004

24/10/2015 20.20.34,000 kernel[0]: 115873.764561 StandardUSB::validateEndpointMaxPacketSize: USB 2.0 5.[5|7].3: endpoint 0x01 invalid wMaxPacketSize 0x0004

Thanks a lot