I recently upgraded from garageband to logic 9, but have found that the audio unit plug-in option for Ezdrummer shows only stereo, not multichannel out. The option is literally missing- instead of the stereo and multichannel options, the only choice is stereo. I spent a lot of money on logic so that I could use this feature, and I would really appreciate it if someone could help me out. I have not yet tried a reinstallation.