Unable to Install MathWorks Features on Matlab on Windows

Greetings!

I was trying to download the Neural Network Toolbox Model for AlexNet Network via Add-On Explorer. The installation seemed successful, with a notice saying 'Installation complete' in the end. However, when I tried typing in "net = alexnet" in command line again, an error still occurs saying that "Error using alexnet (line 50) alexnet requires the Neural Network Toolbox Model for AlexNet Network support package. To install this support package, use the Add-On Explorer."

I have then tested downloading other Mathworks features, and had similar results: an installation complete notice will always appear without the package being actually installed. When I tried download without installation, running the install support packages program would lead to an error reporting "There are no compatible support packages available to install from this location". Nevertheless, for downloading toolboxes, the add-on explorer seemed to function normally.

Any ideas on what might have gone wrong with the installation progress? Many thanks in advance!

Best, Wenying

[Stephen Cousins]

I have run into a similar thing using R2017b. I installed alexnet with the Add-On Explorer and then after the installation, in the same session, I was able to run the "alexnet" command successfully. However, when I restarted Matlab, I get the same error you got:

Error using alexnet (line 50)
alexnet requires the Neural Network Toolbox Model for AlexNet Network support package. To install this support package, use the Add-On Explorer.

Any fix for this would be greatly appreciated.