Akai LPD8 / LPK / MPK Mini - USB/driver problem

[MiL0]

I'm not sure what's happened but since I got 2 x LPD8's and plugged them into my Windows XP laptop, all of my mini Akai devices have stopped working properly.

According to the manual, the LPD8 and MPK Mini are both class compliant and don't need a driver. When you plug them in via USB, they appear as "USB Audio Device" which apparently is normal:



Mine clearly appears as a USB Audio device:



The trouble is that they no longer appear as midi devices in Traktor, MidiOX or the Akai patch editing program. Various forums have suggested that plugging the Akai's into different USB ports causes the driver to get reinstalled and this fixes the problem but I haven't had any luck. Other forums have suggested that if you disable other USB devices, the Akai's start working:



again, no luck with that either

Has anyone else had this problem? Here's some info on this issue:

http://forum.ableton.com/viewtopic.php?f=1&t=157519
http://forum.ableton.com/viewtopic.php?f=2&t=145593
http://forum.cockos.com/archive/index.php/t-70129.html
http://serato.com/forum/discussion/209163
http://www.djtechtools.com/forum/showthread.php?t=8846

[MiL0]

bump - anyone?