# Ableton AU UI not show up **URL:** \ **Category:** Audio Plugins\ **Created:** [March 13, 2012, 7:50pm UTC](https://forum.juce.com/t/ableton-au-ui-not-show-up/8322 "2012-03-13T19:50:07Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![patrickkunz](https://avatars.discourse-cdn.com/v4/letter/p/73ab20/32.png) [@patrickkunz](https://forum.juce.com/u/patrickkunz)\ **Post date:** [March 13, 2012, 7:50pm UTC](https://forum.juce.com/t/ableton-au-ui-not-show-up/8322/1 "2012-03-13T19:50:07Z")
Hi together, First i have to say that i like the new modular system 🙂 Maybe someone knows the solution for this issue. I’m using a new tip after the juce quake and could reproduce the issue with the juce demo plugin. I do following: 1. start the latest ableton live demo 2. load the juce demo AU plugin to a track 3. delete/remove the juce demo AU plugin 4. load the vst demo plugin 5. delete the vst demo plugin 6. load the AU plugin —\> the ui does not show up anymore (no crash) I set the suffix in the build preprocessor settings (JUCE\_ObjCExtraSuffix=LSSDJEqVST32bit, JUCE\_ObjCExtraSuffix=LSSDJEqAU32bit). I know its not the fastest way, but i do following to get different suffix: 1. Build the VST and AU the same time like in the demo plugin. 2. Rename the AU plugin in finder and set a new suffix in XCode 3. build the plugins again, delete the new AU and rename the one with the old suffix back the the original name. Is there something i miss? What is JUCER\_XCODE\_MAC\_F6D2F4CF ? Edit: I’m pretty shure that the suffix worked, because the file size is different. ---
**Author:** ![bigtick](https://avatars.discourse-cdn.com/v4/letter/b/5e9695/32.png) [@bigtick](https://forum.juce.com/u/bigtick)\ **Post date:** [April 27, 2012, 12:12pm UTC](https://forum.juce.com/t/ableton-au-ui-not-show-up/8322/2 "2012-04-27T12:12:59Z")
Got the exact same problem here. It looks like the 2nd time the AU is loaded, Ableton thinks its UI is already opened, so it doesn’t go through all the calls to open it. ---
**Author:** ![patrickkunz](https://avatars.discourse-cdn.com/v4/letter/p/73ab20/32.png) [@patrickkunz](https://forum.juce.com/u/patrickkunz)\ **Post date:** [May 28, 2012, 8:34pm UTC](https://forum.juce.com/t/ableton-au-ui-not-show-up/8322/3 "2012-05-28T20:34:03Z")
I could reproduce it also with another plugin that has a different suffix. I remember the keystroke issue: [http://www.rawmaterialsoftware.com/viewtopic.php?f=8&t=5453&hilit=ableton+Keystrokes](http://www.rawmaterialsoftware.com/viewtopic.php?f=8&t=5453&hilit=ableton+Keystrokes) It looks that something is wrong with the AU UI’s in ableton live. ---
**Author:** ![bigtick](https://avatars.discourse-cdn.com/v4/letter/b/5e9695/32.png) [@bigtick](https://forum.juce.com/u/bigtick)\ **Post date:** [May 28, 2012, 8:46pm UTC](https://forum.juce.com/t/ableton-au-ui-not-show-up/8322/4 "2012-05-28T20:46:37Z")
This fixed it for me: [http://gruntthepeon.free.fr/blog/index.php/2010/03/10/39-avoiding-objective-c-class-name-conflicts-with-brute-force](http://gruntthepeon.free.fr/blog/index.php/2010/03/10/39-avoiding-objective-c-class-name-conflicts-with-brute-force) ---
**Author:** ![patrickkunz](https://avatars.discourse-cdn.com/v4/letter/p/73ab20/32.png) [@patrickkunz](https://forum.juce.com/u/patrickkunz)\ **Post date:** [May 29, 2012, 9:22pm UTC](https://forum.juce.com/t/ableton-au-ui-not-show-up/8322/5 "2012-05-29T21:22:19Z")
> [@BigTick](#): > > This fixed it for me: [Avoiding objective-c class name conflicts with brute force - uuuurg](http://gruntthepeon.free.fr/blog/index.php/2010/03/10/39-avoiding-objective-c-class-name-conflicts-with-brute-force) Its really brut force, will try that. Thanks for the link! ---
**Author:** ![jules](https://avatars.discourse-cdn.com/v4/letter/j/41988e/32.png) [@jules](https://forum.juce.com/u/jules)\ **Post date:** [May 30, 2012, 6:58am UTC](https://forum.juce.com/t/ableton-au-ui-not-show-up/8322/6 "2012-05-30T06:58:53Z")
Relevant: [http://www.rawmaterialsoftware.com/viewtopic.php?f=2&t=9287](http://www.rawmaterialsoftware.com/viewtopic.php?f=2&t=9287) ---
**Author:** ![patrickkunz](https://avatars.discourse-cdn.com/v4/letter/p/73ab20/32.png) [@patrickkunz](https://forum.juce.com/u/patrickkunz)\ **Post date:** [June 7, 2012, 10:37am UTC](https://forum.juce.com/t/ableton-au-ui-not-show-up/8322/7 "2012-06-07T10:37:28Z")
[quote=“jules”]Relevant: [http://www.rawmaterialsoftware.com/viewtopic.php?f=2&t=9287](http://www.rawmaterialsoftware.com/viewtopic.php?f=2&t=9287)[/quote] Great, thanks a lot! ---
**Author:** ![jimw](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/jimw/32/539_2.png) [@jimw](https://forum.juce.com/u/jimw)\ **Post date:** [March 6, 2013, 1:45am UTC](https://forum.juce.com/t/ableton-au-ui-not-show-up/8322/8 "2013-03-06T01:45:18Z")
Bumping this since the issue was still happening in the tip with Ableton Live 9 x64. See [this post](http://rawmaterialsoftware.com/viewtopic.php?p=61784#p61784) and followups for details on the fix.