There's an update from NI for a problem with Reaktor 5. It replaces the dll file only for the VSTi side of the fence. May want to get the update. I installed it anyways just in case. Not running AL 5 yet.
Mike
http://www.darkenedsoul.net - main website
Ableton Live 8.x/9.x : NI Komplete 8 : Home built 4690K 16GB 500GB SSD, 1TB 7200, 2x2TB.