Why do I receive a java.lang.NullPointerException and ComponentSizeAggregator error in the log file when attempting to install?

Question

MathWorks Support Team 2014-3-7

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https://ww2.mathworks.cn/matlabcentral/answers/121065-why-do-i-receive-a-java-lang-nullpointerexception-and-componentsizeaggregator-error-in-the-log-file

编辑： MathWorks Support Team 2019-4-10

During the download section of the MATLAB Installer, I receive a message stating "Error: The application encountered an unexpected error and needs to close. You may want to try re-installing your product(s)." The error message suggested I check my log file for more information. The log file contains this error among others:

java.lang.NullPointerException

at com.mathworks.install.ComponentSizeAggregator.add(ComponentSizeAggregator.java:13)

at com.mathworks.install.ProductInstallerImpl.downloadProducts(ProductInstallerImpl.java:96)

at com.mathworks.install.ProductInstallerImpl.installProducts(ProductInstallerImpl.java:57)

Why is this happening and how do I resolve this issue?

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Answer 1

MathWorks Support Team 2019-4-10

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编辑：MathWorks Support Team 2019-4-10

To resolve this issue, re-download the installer/products as it may have been corrupted during the download process and go through the installation again.

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Answer 2

Sean de Wolski 2014-3-12

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The directory that you have to remove will likely look something like:

C:\Users\[yourusername]\Downloads\MathWorks\R2014a

Delete the whole MathWorks directory.

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Answer 3

Nafees Ahmad 2015-12-20

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编辑：Walter Roberson 2015-12-21

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