AppDesigner won't run or save: "Too many output variables"

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When I open a brand new App Designer, I can't even save it because the error "Too many output arguments." appears. Even though I haven't made any changes to the file yet. What do I need to do to be able to save an App Designer file?!
  4 Comments
Walter Roberson
Walter Roberson on 27 Sep 2021
Quit MATLAB and restart and use pathtool to have a look at which non-Mathworks directories are in your path. Somewhere in one of them is a function that is interfering with using App Designer.
Mitchell Tillman
Mitchell Tillman on 5 Oct 2021
Do you have any idea what types of things may interfere with App Designer? I have no idea what I'm looking for. I've had to use the method you suggested repeatedly, despite only adding a couple of subfolders to the path.

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