Disco party error on Mac

bttoddx

I cannot seem to use disco party with my Blinkytape. The java.lang.NullPointerException error comes up whenever I run it.

I am using Mac OS X version 10.6.8 and I am running processing 2.0.3. Any help with this problem would be greatly appreciated.

Threeethan

Hey bttoddx - could you paste in the top & bottom lines of the error? We'll try to recreate it. You're using DiscoParty without modifications, correct?

bttoddx

Here's the entire dialogue below the code:
Smooth is not supported by this hardware (or driver)
ControlP5 2.0.4 infos, comments, questions at http://www.sojamo.de/libraries/controlP5
Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version = RXTX-2.1-7
Connecting to BlinkyTape on: /dev/cu.usbmodem3d11
LedOutput: Exception while making serial port: java.lang.RuntimeException: Please use Tools ? Fix the Serial Library.
To use the serial library, first open
Applications -> Utilities -> Terminal.app
and enter the following:
sudo mkdir -p /var/lock
sudo chmod 777 /var/lock
java.lang.RuntimeException: java.lang.NullPointerException
at com.jogamp.common.util.awt.AWTEDTExecutor.invoke(AWTEDTExecutor.java:58)
at jogamp.opengl.awt.AWTThreadingPlugin.invokeOnOpenGLThread(AWTThreadingPlugin.java:100)
at jogamp.opengl.ThreadingImpl.invokeOnOpenGLThread(ThreadingImpl.java:205)
at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:172)
at javax.media.opengl.Threading.invoke(Threading.java:191)
at javax.media.opengl.awt.GLCanvas.display(GLCanvas.java:483)
at processing.opengl.PGL.requestDraw(PGL.java:1149)
at processing.opengl.PGraphicsOpenGL.requestDraw(PGraphicsOpenGL.java:1604)
at processing.core.PApplet.run(PApplet.java:2176)
at java.lang.Thread.run(Thread.java:695)
Caused by: java.lang.NullPointerException
at DiscoParty$BlinkyTape.render(DiscoParty.java:270)
at DiscoParty$BlinkyTape.render(DiscoParty.java:265)
at DiscoParty.draw(DiscoParty.java:180)
at processing.core.PApplet.handleDraw(PApplet.java:2305)
at processing.opengl.PGL$PGLListener.display(PGL.java:2601)
at jogamp.opengl.GLDrawableHelper.displayImpl(GLDrawableHelper.java:588)
at jogamp.opengl.GLDrawableHelper.display(GLDrawableHelper.java:572)
at javax.media.opengl.awt.GLCanvas$7.run(GLCanvas.java:1054)
at jogamp.opengl.GLDrawableHelper.invokeGLImpl(GLDrawableHelper.java:1034)
at jogamp.opengl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:909)
at javax.media.opengl.awt.GLCanvas$8.run(GLCanvas.java:1065)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:715)
at java.awt.EventQueue.access$400(EventQueue.java:82)
at java.awt.EventQueue$2.run(EventQueue.java:676)
at java.awt.EventQueue$2.run(EventQueue.java:674)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:685)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
You are running Processing revision 221, the latest is 224.

Yes, I am running disco party without modifications.

The bulk of the errors come up after I click the link to connect to a Blinkytape. The program senses the hardware in the port, but there is an error afterwards.

Matt Mets

It sounds like there is a permissions problem with the serial port. Recent versions of Processing have a fix for it; see if there is an item in the Tools menu called "Fix Serial Permissions" (or similar).

bttoddx

That seems to do the trick, thanks much Matt.