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App designer keeps crashing when using debug mode. My computer? Or app designer bugs?

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Kris Hoffman
Kris Hoffman on 7 Aug 2018
Answered: Reto Christen on 11 Apr 2019
I’m currently using app designer to build an app that’s about 1000 lines. However, app designer/Matlab constantly crashes. I’m running a 2014 MacBook Pro retina 8Gb ram, 2.6GHz i5. I know it’s old, but it runs other (longer) Matlab scripts just fine. Though I’m sure the way Matlab and app designer store information may differ.

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Reto Christen
Reto Christen on 11 Apr 2019
Hi Kris,
can you tell us which exact Matlab Release you are using? I had similar problems with R2017a/b, but R2018b runs quite well for me now (I have also some apps with around 1000 lines).
Anyway, if possible, it is always good to keep your code below 1000 lines since App Designer has some known issues (I have read an article about that from Mathworks but can't find it now). Disabling the "app coding alerts" (Editor > View) can extend this to 1500 lines, but that is not a solution in debug mode.

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