# VST3 32-bit GUI not working? **URL:** \ **Category:** Audio Plugins\ **Created:** [September 30, 2015, 11:38pm UTC](https://forum.juce.com/t/vst3-32-bit-gui-not-working/15633 "2015-09-30T23:38:25Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![FullCode](https://avatars.discourse-cdn.com/v4/letter/f/41988e/32.png) [@FullCode](https://forum.juce.com/u/FullCode)\ **Post date:** [September 30, 2015, 11:38pm UTC](https://forum.juce.com/t/vst3-32-bit-gui-not-working/15633/1 "2015-09-30T23:38:25Z")
After I did a merge of of the latest Juce code into my codebase and I found that the 32-bit VST3 version of my plug-in has a blank GUI.  I figured this must be just a bug with my plug-in because didn't any mention of it on the forums, but after messing around for a while I found I could repro the problem with the Juce Demo Plug-in. I think what's going on is that the old VST/VST3\_Wrapper.mm code used to have all of the same function names, so what happened was that it would use the VST2 versions (verfied that in the debugger). Then in the following commit the functions were renamed so the VST and VST3 versions are distinct, but now this caused the VST3 plug-in to use VST3\_Wrapper.mm code but that appears to be broken for 32-bit builds. ``` Commit: 98ebfdc1fab08ce7103361cf837a91afe2d56651 [98ebfdc] Parents: b7bca8ce5a Author: hogliux Date: September 4, 2015 5:16:52 AM PDT Fix some warnings in the VST/VST3 wrappers ``` If I just rename the fucntions in VST3\_Wrapper.cpp to use the VST\_Wrapper.mm then it works. I'm still puzzled how this ever worked, becuase there should be a name colision build failure. I'm also seeing a bunch of leaked memory asserts in my plug-in and the Juce Demo PlugIn when use the 32-bit Plug-in Host. If the plug-in GUI window is never opened then the leaks do NOT occur. I haven't tried the 64-bit version. Anyone else seen this? ``` *** Leaked objects detected: 1 instance(s) of class OSXTypeface JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 1 instance(s) of class Typeface JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 1 instance(s) of class ContentWrapperComponent JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 1 instance(s) of class OwnedArray JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 1 instance(s) of class TypefaceCache JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 1 instance(s) of class TimerThread JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 1 instance(s) of class Thread JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 3 instance(s) of class WaitableEvent JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 1 instance(s) of class LookAndFeel_V2 JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 1 instance(s) of class LookAndFeel JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 1 instance(s) of class DisplaySettingsChangeCallback JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 1 instance(s) of class Desktop JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 1 instance(s) of class ComponentAnimator JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 1 instance(s) of class OwnedArray JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 1 instance(s) of class MouseInputSource JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 1 instance(s) of class MouseInputSourceInternal JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 1 instance(s) of class OwnedArray JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 5 instance(s) of class AsyncUpdater JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 1 instance(s) of class Component JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 1 instance(s) of class MouseCursor JUCE Assertion failure in juce_LeakedObjectDetector.h:95 *** Leaked objects detected: 2 instance(s) of class JuceVST3Editor JUCE Assertion failure in juce_LeakedObjectDetector.h:95 ``` ---
**Author:** ![jules](https://avatars.discourse-cdn.com/v4/letter/j/41988e/32.png) [@jules](https://forum.juce.com/u/jules)\ **Post date:** [October 1, 2015, 10:01am UTC](https://forum.juce.com/t/vst3-32-bit-gui-not-working/15633/2 "2015-10-01T10:01:24Z")
Are you sure you've not got some kind of header/cpp mismatch in your build? If there was a problem linking those functions then your build would have failed, it wouldn't be something that goes wrong at runtime (?) ---
**Author:** ![FullCode](https://avatars.discourse-cdn.com/v4/letter/f/41988e/32.png) [@FullCode](https://forum.juce.com/u/FullCode)\ **Post date:** [October 1, 2015, 10:54pm UTC](https://forum.juce.com/t/vst3-32-bit-gui-not-working/15633/3 "2015-10-01T22:54:15Z")
I initially figured it was something like that or just a stupid mistake with our merge, but I was able to reproduce the problem with the Demo Plug-in on a pristine up to date (as of the 22nd) Juce repo.  Anyone else seeing this problem? ---
**Author:** ![jules](https://avatars.discourse-cdn.com/v4/letter/j/41988e/32.png) [@jules](https://forum.juce.com/u/jules)\ **Post date:** [October 2, 2015, 8:35am UTC](https://forum.juce.com/t/vst3-32-bit-gui-not-working/15633/4 "2015-10-02T08:35:11Z")
I'll have a look at this today - looks like there's some duplicated code got in there somehow, and something looks a bit fishy to me.. ---
**Author:** ![FullCode](https://avatars.discourse-cdn.com/v4/letter/f/41988e/32.png) [@FullCode](https://forum.juce.com/u/FullCode)\ **Post date:** [October 7, 2015, 4:38pm UTC](https://forum.juce.com/t/vst3-32-bit-gui-not-working/15633/5 "2015-10-07T16:38:17Z")
Hi Jules, any progress on this? ---
**Author:** ![jules](https://avatars.discourse-cdn.com/v4/letter/j/41988e/32.png) [@jules](https://forum.juce.com/u/jules)\ **Post date:** [October 7, 2015, 5:05pm UTC](https://forum.juce.com/t/vst3-32-bit-gui-not-working/15633/6 "2015-10-07T17:05:27Z")
Yes, I tidied up the duplicated code like I said I would. Let us know if it still doesn't work. ---
**Author:** ![FullCode](https://avatars.discourse-cdn.com/v4/letter/f/41988e/32.png) [@FullCode](https://forum.juce.com/u/FullCode)\ **Post date:** [October 9, 2015, 3:05am UTC](https://forum.juce.com/t/vst3-32-bit-gui-not-working/15633/7 "2015-10-09T03:05:00Z")
I updated my clean Juce repo to today's code and rebuilt the Juce Demo Plugin but I still see the same issue. When I look through the history I don't see any commits related to the VST/VST3 wrapper, so I don't see how there could be a change in behavior. I re-verfied that reseting my repo back to the following commit the problem is fixed: ``` Commit: b7bca8ce5a1123dcf69bdbd1a26dfaba02a044f2 [b7bca8c] Parents: e881711f2a Author: hogliux Date: Friday, September 04, 2015 5:13:31 AM Add VST3 bypass support ``` And then if I move the repo up by one commit then the problem occurs. So as I mentioned this commit is clearly the cause: ``` Commit: 98ebfdc1fab08ce7103361cf837a91afe2d56651 [98ebfdc] Parents: b7bca8ce5a Author: hogliux Date: Friday, September 04, 2015 5:16:52 AM Fix some warnings in the VST/VST3 wrappers ```   The other thing I verified is that if I copy the enitre contents of the juce\_VST\_Wrapper.mm into juce\_VST3\_Wrapper.mm and then rename all of the functions ending in "VST" to VST3" as it was before then it compiles and works properly with a functional GUI. So I still stand behind my theory that the old code was executing juce\_VST\_Wrapper.mm code even as a VST3 plug-in. I also verified that with breakpoints in the debugger that it does actually execute the "incorrect" code if you revert back before 09/04.  -Chris   ---
**Author:** ![jules](https://avatars.discourse-cdn.com/v4/letter/j/41988e/32.png) [@jules](https://forum.juce.com/u/jules)\ **Post date:** [October 9, 2015, 9:01am UTC](https://forum.juce.com/t/vst3-32-bit-gui-not-working/15633/8 "2015-10-09T09:01:18Z")
Sorry, there was a bit of a mix-up and those changes never got pushed - should be up there now! ---
**Author:** ![FullCode](https://avatars.discourse-cdn.com/v4/letter/f/41988e/32.png) [@FullCode](https://forum.juce.com/u/FullCode)\ **Post date:** [October 9, 2015, 7:54pm UTC](https://forum.juce.com/t/vst3-32-bit-gui-not-working/15633/9 "2015-10-09T19:54:02Z")
Great, thanks. That fixed the problem.