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AU won't open in Logic Pro 9, but will in Logic Pro X
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AU won't open in Logic Pro 9, but will in Logic Pro X


  • Subject: AU won't open in Logic Pro 9, but will in Logic Pro X
  • From: Henrik Jensen <email@hidden>
  • Date: Sun, 08 Dec 2013 14:47:59 +0100

I'm trying for the first time to write my own Audio Units in Xcode 5.

I've succeeded in building the AU using the latest sample code from Apple:
https://developer.apple.com/library/mac/samplecode/sc2195/Introduction/Intro.html#//apple_ref/doc/uid/DTS40013969

The problem is that my plugin won't load in Logic Pro 9 or Ableton Live 8.

I've validated it with auval and successfully loaded it into Logic Pro X and AU Lab.

From what I've gathered by googling around, it has something to do with a change in the way that Audio Units are opened - something about previously using a .rsrc file, but now using the info.plist file. It's all abit unclear to me what's going on. I'm new to both Audio Units and Xcode, plus I've never used C++ really extensively, so I feel a bit lost here.

I really need my plugins to be compatible with Logic Pro 9, so if someone could point out what I need to do in order to make it so, I would really appreciate it.

Here's the output from auval when opening the AU as a component using the '-comp' option:

auval -v aufx QFLT Netw -comp
[...]
--------------------------------------------------
TESTING OPEN TIMES:
COLD:
FATAL ERROR: OpenAComponent: result: -50,0xFFFFFFCE

Thanks in advance for any advice

Henrik
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