How do I fix this error on Matlab startup? java.lang.​IllegalArg​umentExcep​tion: File migratePref.txt should only contain 'T' or 'F'!

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uuu
uuu 2018-4-26
回答： Kautuk Raj 2024-12-12
This error also appears when using the Application Compiler
java.lang.IllegalArgumentException: File migratePref.txt should only contain 'T' or 'F'!
java.lang.IllegalArgumentException: File migratePref.txt should only contain 'T' or 'F'!
at com.mathworks.services.Prefs.readMigrateFlag(Prefs.java:2196)
at com.mathworks.services.Prefs.createTwoWayMapPrefsSettings(Prefs.java:375)
at com.mathworks.services.Prefs.<clinit>(Prefs.java:213)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at com.mathworks.util.PostVMInit$StartupClass.init(PostVMInit.java:161)
at com.mathworks.util.PostVMInit.perform(PostVMInit.java:237)
Warning: Initializing MATLAB Graphics failed.
This indicates a potentially serious problem in your MATLAB setup, which should be resolved as soon as possible. Error detected was:
MATLAB:load:unableToReadMatFile
Unable to read MAT-file C:\Users\BrendanM\AppData\Roaming\MathWorks\MATLAB\R2018a\matlabprefs.mat. File might be corrupt.
> In hgrc (line 163)
In initprefs (line 11)
In matlabrc (line 94)
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回答（1 个）

Kautuk Raj
Kautuk Raj 2024-12-12
The error message you are encountering indicates that the startup preferences for MATLAB are invalid or corrupt.
I suggest you try to to recreate the preferences currently in place on your system using the following article on the MATLAB Answers forum: https://www.mathworks.com/matlabcentral/answers/99625
Try following the steps outlined there, and after doing so launch MATLAB again to check if it resolves the error.

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