One week ago on saturday i performed live without any problem using BEYOND and my APC40, this weekend i fired up the same notebook and was surprised by the following message: MIDI Error MIDI OUTPUT Error, Device 1, Error code: 6, THere is no driver installed on your system... Output to this device is disabled. MIDI System information Elitebook 8440p with Windows 7 64 bit sp1 BEYOND Ultimate Version 1.90 Build 557 APC 40 template build in in BEYOND, using version layout 2.9 I checked windows hardware and saw that the apc 40 presented itself as usb audio device. I didn't use the apc for the show and started to troubleshoot at home. First i reinstalled the driver from the cd. In windows hardware device manager listing it is now shown under "Sound, video and game controllers" as "Akai APC40" along with "Automap MIDI, Automap Propellerhead and Automap Propellerhead Mixer) When i fire up BEYOND i go to settings midi settings device settings Device 1 (Input and Output) Akai APC40 Akai APC 40 (Information below stats "no problems detected" and device 1 B0 07 58) Press "Configure" Press "Open" Select 1.4 or 2.9 layout which loads, and press "ok" On the apc40 button "1" is green and all pots are green with first left light. i then press a button for selecting a cue and the midi error pops up. So i need a little help in getting it to work again or troubleshoot since i can't perform without it anymore ;-) Suggestions?