[kepler-users] Why doesn't "Listen to Actor" work on Kepler 2.2/2.3 for Windows?

[Daniel Crawl]

Hi Daren,

I get the same behavior with Windows 7. The error is the same for
both "Listen to Actor" and editing a Python script:

java.lang.NullPointerException
     at ptolemy.actor.gui.TextEditor.getBackground(TextEditor.java:144)
     at java.awt.Window.setBackground(Unknown Source)
     at java.awt.Frame.setBackground(Unknown Source)
     at ptolemy.gui.Top.access$1001(Top.java:141)
     at ptolemy.gui.Top$SetBackgroundRunnable.run(Top.java:1889)
     at ptolemy.gui.Top.deferIfNecessary(Top.java:247)
     at ptolemy.gui.Top.setBackground(Top.java:501)
     at ptolemy.actor.gui.TextEditor.setBackground(TextEditor.java:238)
     ...

Christopher, do you know what causes this?

Thanks,

   --dan


On 2/8/12 4:28 AM, Daren Thomas wrote:
> I can use "Listen to Actor" for Kepler 2.3 on Mac OS X, but not under
> Windows. When I select the option from the context menu, nothing
> happens.
>
> Also, when I try to edit a script for the Python actor, I get an error
> message "Failed to open a dialog to edit the target (null)" - this
> doesn't bother me ATM, but I guess I should mention it, as it could be
> an additional symptom of a wrongly configured system.
>
> I installed Kepler 2.3 on Windows with the installer provided on the
> website. It seems "all" questions in the users list refer to compiling
> your own version/environment. Is that the way to go?
>
> Regards,
> Daren Thomas
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