Midisport4x4 doesn't show anymore
 

Hi everyone. just bought a midisport 4x4, connected the unit to my computer and opened protools 12. Created a midi track and could see all 4 ins and outs in the track. Went to Setup/Midi/MidiBeatClock window and enabled midi for all 4 ports. And then when I went back to my PT edit page, my midi track was inactive. I created a new midi track but it doesn't show the midi ports anymore. Went back the the midi set up window and the device does not appear anymore. When in the midi studio setup window, the device appears like disconnected. Checked the usb and it is still connected to the computer. Anyone knows what is going on? Thanks!!

Re: Midisport4x4 doesn't show anymore
 

I have the Motu Midi Express XT which is also a USB midi interface/Patch bay. I've been using it with Pro Tools for a while and never experienced such issue.
I'm thinking maybe there's a problem with the USB port? To isolate the problem, can you test it out with another DAW such as Reaper?