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Why does the MATLAB 2017a Mac installer crash throwing an error about java.lang.​​NullPoint​e​rExcepti​on​Compone​nt and SizeAggregator in the log file?

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yangyang 2017 年 7 月 4 日
編集済み: yangyang 2017 年 7 月 5 日
I have MacOS 10.12.5 and I have 2016b installed already. I tried to install 2017a but this is the error I got:
(Jul 04, 2017 21:36:48) java.lang.NullPointerException
at com.mathworks.install.ComponentSizeAggregator.add(
at com.mathworks.install.ProductInstallerImpl.downloadProducts(
at com.mathworks.install.ProductInstallerImpl.installProducts(
at com.mathworks.install.InstallerImpl.install(
at com.mathworks.installwizard.model.InstallTask.execute(
at com.mathworks.installwizard.model.AbstractBackgroundTask.execute(
at com.mathworks.wizard.worker.WorkerImpl.doInBackground(
at javax.swing.SwingWorker$
at java.util.concurrent.ThreadPoolExecutor.runWorker(
at java.util.concurrent.ThreadPoolExecutor$
(Jul 04, 2017 21:36:48) Error: The application encountered an unexpected error and needs to close. You may want to try re-installing your product(s). More information can be found at /var/folders/r0/r4rx7j0x6mngw7v8ypz4xdkr0000gn/T/mathworks_username.log (Jul 04, 2017 21:36:52) Exiting with status -1 (Jul 04, 2017 21:36:53) End - Unsuccessful.
Could someone help me to figure out what should I do to solve this issue?
P.S. I don't have any folder named MathWorks under Downloads.

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