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Corrupted files .mlapp, how to restore them in Matlab R2019b?

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Pierre Puchaud 2019-12-18

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评论： cherry jain 2021-7-6

Hello,

I have created .mlapp files with matlab 2018b/2018a.

And they cannot be runned but not opened in Matlab 2019b.

Do you have any clue to modify it in matlab 2019b ?

Best Regards,

Pierre

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Kojiro Saito 2019-12-19

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Are you using R2019b or R2019b Update 1, 2, or 3?

Pierre Puchaud 2019-12-19

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Here is the version :

MATLAB Version: 9.7.0.1261785 (R2019b) Update 3

Pierre Puchaud 2019-12-19

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It has also been tested with MATLAB Version: 9.7.0.1190202 (R2019b)

Kojiro Saito 2019-12-19

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I've asked the update version because R2019b has a bug which make apps unable to open, but this issue was fixed in R2019b Update1.

https://www.mathworks.com/support/bugreports/details/2066232

You're using Update3, so, it might be different from this.

Adam Danz 2019-12-20

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What happens when you open the app in an earlier version, save it as a new file, and then open the new file up in r2019b?

I have a bunch of Matlab releases available so if you attach the mlapp file I could try that process in some more recent releases prior to r2019b.

Pierre Puchaud 2019-12-20

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@Adam, Thank you, I've tried your tip but it didn't worked.

Here is the file .mlapp

https://github.com/anmuller/CusToM/blob/Dev_IRSST/Functions/Interface/Analysis.mlapp

@Kojiro, it didn't work on versions :

9.7.0.1190202 (R2019b)
9.7.0.1261785 (R2019b) Update 3

I may reinstall update 1 but every users of the app will have to... By the way, i'm sure to understand what i should do with the bug report.

Adam Danz 2019-12-20

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I don't have a solution but here's what I've found.

As OP describes, the app open with appdesigner('Analysls') in r2018b and does not open in r2019b (Version: 9.7.0.1247435, Update 2). Instead, a message box appears stating that the mlapp file is corrupt.

I opened it with appdesigner('Analysls') in r2019a and it initially loaded but didn't completely load. Some of the app components didn't appear, the option to switch to code mode wasn't available, and the save button and other menu features were not enabled. When I tried to close appdesigner, the main window cleared but the App Designer window would not close. In fact, I had to close it from Windows Task Manager (matlabWindow.exe). I repeated that process in r2019a with the same results.

@Pierre Puchaud, I would avoid running this file in r2019a (or at least back it up first, which you should do anyway).

Pierre Puchaud 2020-1-6