MATLAB r2015b installation with error java.lang.​NullPointe​rException

Hello everyone,

I have recently unistalled matlab r2015 on my Windows7 (32bit) machine and now I tried to re-install the same version with a campus license on the same computer, but it doesn't work. The installer application encountered an unexpected error and it stoped with the specific error message in log file as follow:

 Task MATLAB R2015b Startup Accelerator for C:\Program Files\MATLAB\R2015b does not exist
 java.lang.NullPointerException
  at com.mathworks.install.ComponentSizeAggregator.add(ComponentSizeAggregator.java:13)
  at com.mathworks.install.ProductInstallerImpl.downloadProducts(ProductInstallerImpl.java:102)
  at com.mathworks.install.ProductInstallerImpl.installProducts(ProductInstallerImpl.java:62)
  at com.mathworks.install.InstallerImpl.install(InstallerImpl.java:108)
  at com.mathworks.installwizard.model.InstallTask.execute(InstallTask.java:46)
  at com.mathworks.installwizard.model.AbstractBackgroundTask.execute(AbstractBackgroundTask.java:38)
  at com.mathworks.installwizard.model.AbstractTask.call(AbstractTask.java:73)
  at com.mathworks.installwizard.model.AbstractTask.call(AbstractTask.java:23)
  at com.mathworks.wizard.worker.WorkerImpl.doInBackground(WorkerImpl.java:24)
  at javax.swing.SwingWorker$1.call(Unknown Source)
  at java.util.concurrent.FutureTask.run(Unknown Source)
  at javax.swing.SwingWorker.run(Unknown Source)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
  at java.lang.Thread.run(Unknown Source)

I've tried to install another version, it seems work, but I still wonder what's the problem with r2015 reinstallation? I' ll appreciate it if anyone could help.

[huda febrianto]

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Answer 1

[Ayush Goyal]

Hi Xiaoyu,

I understand that you are facing an installation issue. Such errors generally occur due to corrupt files being used while performing Installation or uninstallation.

May you try performing a clean installation of MATLAB R2015b on your system using the link below?

How do I perform a clean installation of MATLAB on a Windows system? - (mathworks.com)