I have problem with ''Deep Learning Toolbox Model for AlexNet Network'' installation, please help me :(

Error using load Unable to read data stream because the data contains a bad version or endian-key

Error in alexnet (line 56) data = load(matfile);

Error in Paper1 (line 6) net =alexnet;

Error using matlab.supportpackagemanagement.internal.util.getInstalledSpPkgProducts (line 31) Java exception occurred: java.lang.NullPointerException

at com.mathworks.install_impl.InstalledProductFactory.filterProductsWithoutProductNumbers(InstalledProductFactory.java:95)

at com.mathworks.install_impl.InstalledProductFactory.access$000(InstalledProductFactory.java:47)

at com.mathworks.install_impl.InstalledProductFactory$1.execute(InstalledProductFactory.java:65)

at com.mathworks.install_impl.InstalledProductFactory$1.execute(InstalledProductFactory.java:60)

at com.mathworks.install_impl.InstalledProductFactory$InstallerWorkSpace.executeTask(InstalledProductFactory.java:257)

at com.mathworks.install_impl.InstalledProductFactory$InstallerWorkSpace.access$300(InstalledProductFactory.java:175)

at com.mathworks.install_impl.InstalledProductFactory.getInstalledProducts(InstalledProductFactory.java:84)

Error in matlab.supportpackagemanagement.internal.getInstalledSupportPackagesInfo (line 12) packages = matlab.supportpackagemanagement.internal.util.getInstalledSpPkgProducts();