Compile Error "DX execution failed" when using Gestures extension



I recently added Gestures extension from @Mika, to my project and now I am getting compile time error when I try to create apk. I am able to successfully test app in Live mode.

If I remove Floating Action Button from my app, it compiles fine.

Error Message:
Thunkable is unable to compile this app.
The compiler error output was
________Preparing application icon
________Creating values xml
________Creating animation xml
________Creating fragment xml
________Generating manifest file
________Attaching native libraries
________Attaching component assets
________Attaching ttf files
________Compiling source files
(compiling com/thunkable/android/ishpreet_damir/JuggernautMethod_11_temp/settings.yail to
(compiling com/thunkable/android/ishpreet_damir/JuggernautMethod_11_temp/Screen1.yail to
(compiling /tmp/runtime4849803520359017740.scm to
Kawa compile time: 4.16 seconds
________Invoking DX
YAIL compiler - DX execution failed.

Any help is greatly appreciated.


which extensions do you use in the project?

your error message is DX exectution failed
you might want to do a search in the forum

see also SteveJG’s monster list


Error: Your build failed due to an error in the DX stage, not because of an error in your program."

Hi @Taifun thanks for reply. When I remove gestures extension, project works fine. When I add gestures extension and remove FAB component, project works fine, but both of them don’t work together.


good to know…
@Mika and @TingC might want to find out, why…?
Meanwhile I added this as a note in my extensions directory


Thank you @Taifun for your responses.


Is it possiple that this is the issue creator?

I look today which classes my extension uses.
Maybe there is a conflict with the fab sources.


when did you build that extension the last time?
the newest version of the App Inventor sources might have an issue, but probably you built earlier, see also



last build was June 14, 2017


which means, it is another issue…


Please try this version of my extension:
com.NMD.Gesture.aix (13,6 KB)

I have removed all unused things in the code.

I can build the extension without any problem and I used for the test the FAB in the same project.


Hi @Mika I am still getting this error in my project. When I remove FAB, project compiles fine.


I can’t rebuild the issue. Because it works fine for me.
I can add my extension and add the FAB component.
It works perfect for me without issue.


Thanks @Mika I will do more testing and try to find out if there is anything else going on in my project that is causing issues


Try to create a new project with my extensions and the fab.
Does it works for you too?


Thanks @Mika for your support. I tried it again and now its working.
I did not make any changes. Not even your new extension. It is working fine now with old extension.


I think you can remove your note.