Can no longer run matlabpool (possibly after today's Java update?)

I get the following error message when I try to run "matlabpool open":

??? Error using ==> matlabpool at 125 The class distcomp.typechecker has no property or method named 'getDefaultValue'.

This morning, I updated Java to 1.6.0_39 (Update 12). Yesterday all was working smoothly.

MATLAB Version 7.12.0.635 (R2011a) Operating System: Mac OS X Version: 10.6.8 Build: 10K549 Java VM Version: Java 1.6.0_39-b04-442-10M4008 with Apple Inc. Java HotSpot™ 64-Bit Server VM mixed mode

Many thanks in advance!

[Andi]

I rebooted the system and the following error came up upon trying to run "matlabpool open":

??? Error using ==> matlabpool at 125 Java exception occurred: java.lang.NullPointerException at java.util.logging.Logger.demandLogger(Logger.java:286) at java.util.logging.Logger.getLogger(Logger.java:321)

[Walter Roberson]

Please see http://www.mathworks.co.uk/matlabcentral/answers/62496-java-mac-osx-10-6-update-12-problem-with-matlabpool

[Will]

Solved! It works for me:

http://www.smast.umassd.edu/CMLAB/notebook/?p=503

[Andi]

Will, thanks for your help! Nevertheless, the Java version they advise (in 2011) is 1.6.0_22, which is pretty old in view of how fast vulnerabilities are discovered and exploited. I have downloaded 1.6.0_37 (the one before _39) from Apple and I am thinking of installing that rather the older 0_22.

[Corina]

The link given by Walter worked for me! Thanks for sharing the link.

It did not required to do anything to Java.

Answer 1

[Will]

Solved! it works for me:

http://www.smast.umassd.edu/CMLAB/notebook/?p=503

[Andi]

Will, apparently Mathworks is working on this. Here's a quote from a parallel post on the same topic:

"This issue was brought to the attention of MathWorks Technical Support earlier this week. This issue is reproducible and being investigated together with Development. In case you contact MathWorks Technical Support, you can refer to this thread and 'SR 1-LF8FNT'."

Answer 2

[Daniel Golden]

Here's the official Mathworks bug report and a patch to solve the problem: http://www.mathworks.com/support/bugreports/919688

[Nicholas]

It works perfectly, however it still does not work with compiled versions (MCR installation I mean, even applying that patch to the MCR folder)

any idea?

[Thomas Ibbotson]

Hi Nicholas,

Can you paste the error you are getting when using the MCR here? Is it the same matlabpool problem, or a different issue? The patch was only meant to fix the problems in the PCT code. It's possible you've hit a different issue with the MCR and the new JVM versions.