Help: I can't open simulink block library. not responding at all

Question

Tom Klijn 2015-12-10

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/259797-help-i-can-t-open-simulink-block-library-not-responding-at-all

评论： Franky Pan 2017-9-16

I can't open simulink block library. I get the spinning wheel at my mouse but nothing happends (I have waited 30+min multiple times). Just 2 days ago everything worked perfect. I installed latest windows updates and google chrome and after that the help functionality didn't work in matlab/simulink. I tried lots of things to fix it eventually found a solution but wanted to restore matlab/simulink to defaults by reinstalling it to be sure everything was all oke again. But now the problems are worse and even reinstalling doesn't fix it.

I tried: uninstalling matlab 2015b (all tools). removing all leftover files (and also did a register scan with CC cleaner). reinstalled matlab 2015b. still not working. (tried it multiple times)

Also HELP doesn't work afther a fresh install but I managed to fix that with this command.

com.mathworks.mlwidgets.html.HtmlComponentFactory.setDefaultType('HTMLPANEL');

Also tried these commands:

restoredefaultpath
savepath
rehash toolboxcache

I don't know what else to do (I'm considering reinstalling windows just to get matlab/simulink working again I need it to finish a project).

I'm running Windows 7 64-bit (latest updates installed) and matlab 2015b-64bit.

when I press ctrl+c I get this message and the library opens after all, but I do not trust using it

Warning: An error occurred trying to load the Simulink HMI engine.  Possible reasons include pressing
Ctrl+C or running MATLAB with the -nojvm option. Close and re-open any open any Simulink models to
assure proper functioning.  For proper functioning of Simulink HMI and the Simulation Data Inspector,
the JVM is required. 
> In slxPackager/partDefHmi
  In slxPackager/registerHandler
  In slxPackager/executeLoadCallbacks
  In slprivate (line 11)
  In load_system (line 21)
  In libbrowse2 (line 21) 
Warning: An error occurred trying to load the Simulink HMI engine.  Possible reasons include pressing
Ctrl+C or running MATLAB with the -nojvm option. Close and re-open any open any Simulink models to
assure proper functioning.  For proper functioning of Simulink HMI and the Simulation Data Inspector,
the JVM is required. 
> In DAStudio.warning (line 28)
  In slxPackager/partDefHmi
  In slxPackager/registerHandler
  In slxPackager/executeLoadCallbacks
  In slprivate (line 11)
  In load_system (line 21)
  In libbrowse2 (line 21)

Does anyone know how to fix this I'm willing to try anything

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Answer 1

Shruti Sapre 2015-12-16

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编辑：Shruti Sapre 2015-12-16

Hi Tom,

This could be a known Java 7 issue where an operating system's IPv6 configuration prevents IPv4 loopback. That fails connector startup. A common workaround is setting "java.net.preferIPv4Stack" to "true" so JVM checks IPv4 first. The setting may be applied through java.opts or _JAVA_OPTIONS.

Some relevant links to get you started:

https://cwiki.apache.org/confluence/display/MAVEN/ConnectException

http://superuser.com/questions/453298/how-to-force-java-to-use-ipv4-instead-ipv6

<http://stackoverflow.com/questions/8367226/eclipse-failed-to-initialize-monitor-thread-unable-to-establish-loopback-conne>

Hope this helps!

-Shruti