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Quoted from "DrHeywood"

Hello,

I'm hoping that you can help me as I love using the Virus but seem to be plagued with problems operating it.

The first of these is that Logic randomly decides not to recognise the Virus (even though I get the USB link established message on the unit itself).

The second is that when it does sync with the host, the recorded MIDI sometimes plays back in time with the rest of the arrangement, other times it plays back slightly after when it should and other times it plays back quicker than it should.

I'm running Logic 9.1.3 on a 27" iMac with an Elektron MachineDrum and Monomachine connected in series through the elektron MIDI interface (using 1 USB socket in total) and a focusrite saffire 24 DSP audio interface (using 1 other USB socket).

I would really appreciate it if you could help out with this as I've been trying to fix it for weeks and it's really frustrating when I sit down to write some music and instead have to fix my setup.

If you require any further information then please let me know.

Thanks

• Logic randomly won't recognize the Virus (no sound or MIDI can be sent/received from the unit) and I will have to unplug then plug back in the USB cable from the Virus to get it to work (even though the Virus itself says that it has a USB connection).
• The MIDI timing is all over the map. Arpeggios and LFO's will sometimes sync, sometimes play before the beat and other times play behind the beat. I keep having to turn the Virus "Live" mode on and off to get the Virus to play back in sync. It will work for a while and then start getting out of sync again (apparently after I make even minor edits on other Logic tracks). I have tried turning off Logic's latency compensation but this doesn't seem to make a difference.

• I finally just gave up trying to use the USB audio and now route analog audio from the Virus into my MOTU interface. This way I don't get garbled audio and weird audio glitches all the time.
  
• After every 5 minutes or so of playback within Logic, the Virus will just freak out and start playing back a jumble of notes as if some MIDI buffer has been overloaded. It's crazy and beyond annoying. This seems to be much worse when running Logic in 64-bit mode.
  

Quoted from "MusicMaven"

I too am trying to use my TI2 with Logic (v9.1.4) on a 27" iMac. I have a MOTU 828 mk3 interface connected via Firewire. I am experiencing the same EXTREMELY frustrating issues:
Logic randomly won't recognize the Virus (no sound or MIDI can be sent/received from the unit) and I will have to unplug then plug back in the USB cable from the Virus to get it to work (even though the Virus itself says that it has a USB connection).
The MIDI timing is all over the map. Arpeggios and LFO's will sometimes sync, sometimes play before the beat and other times play behind the beat. I keep having to turn the Virus "Live" mode on and off to get the Virus to play back in sync. It will work for a while and then start getting out of sync again (apparently after I make even minor edits on other Logic tracks). I have tried turning off Logic's latency compensation but this doesn't seem to make a difference.

Quoted from "Marc"

who's using a hub right now?