在Mac上安装matlab, 激活阶段出现错误

Subject:

Why do I get an unexpected exception when activating MATLAB 7.8 (R2009a) or earlier on a Mac OS X machine?

Problem Description:

When I attempt to activate MATLAB on Mac OS X, I get the error:
There was an unexpected exception:
null
See the log file (/tmp/aws.log) for more details.
The log file has the following information:
MATHWORKS ACTIVATION IS STARTING UP.
java.lang.UnsatisfiedLinkError: Cant load library: /Applications/MATLAB_R2008b.app/bin/maci64/libinstutil.jnilib
com.mathworks.instutil.NativeUtility.(NativeUtility.java:36)
com.mathworks.instutil.MachineInfo.(MachineInfo.java:40)
com.mathworks.activationclient.model.ActivationModelImpl.loadNativeLib(ActivationModelImpl.java:216)
com.mathworks.activationclient.model.ActivationModelImpl.getMachineInfo(ActivationModelImpl.java:189)
com.mathworks.activationclient.view.ApplicationViewImpl.getMachineInfo(ApplicationViewImpl.java:200)
com.mathworks.activationclient.view.ApplicationViewImpl.showGUI(ApplicationViewImpl.java:79)
com.mathworks.activationclient.controller.ApplicationControllerImpl.start(ApplicationControllerImpl.java:99)
com.mathworks.activationclient.ActivationApplication.main(ActivationApplication.java:31)
null
com.mathworks.activationclient.view.ApplicationViewImpl.showGUI(ApplicationViewImpl.java:79)
com.mathworks.activationclient.controller.ApplicationControllerImpl.start(ApplicationControllerImpl.java:99)
com.mathworks.activationclient.ActivationApplication.main(ActivationApplication.java:31)
How can I activate MATLAB on Mac OS X?

Solution:

This issue is due to a change in the default Java version from when MATLAB R2009a was released. The activation may attempt to call 64 bit libraries, whereas MATLAB is a 32 bit application under Mac OS X. As a workaround, you can temporarily change your system’s default java for applications to use the 32-bit JVM. Once you have activated, you can change it back to Java 6 (64-bit) or J2SE 5 (64-bit).

To do this, open the Java Preferences application from /Applications/Utilities/Java/Java Preferences (10.5) or /Applications/Utilities/Java Preferences (10.6).

In the section marked “Java Applications”, drag the 32-bit item to the top of the list. Then close this application and restart the activation client by double clicking on the MATLAB application in your Applications directory.