# Teensy 3.2 + Octows2811 adaptor - Processing error: InvocationTargetException

**URL:** <https://discourse.processing.org/t/teensy-3-2-octows2811-adaptor-processing-error-invocationtargetexception/15365>\
**Category:** Electronics (Arduino, etc.)\
**Created:** [November 10, 2019, 1:48am UTC](https://discourse.processing.org/t/teensy-3-2-octows2811-adaptor-processing-error-invocationtargetexception/15365 "2019-11-10T01:48:37Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![adds666](https://avatars.discourse-cdn.com/v4/letter/a/eb8c5e/32.png) [@adds666](https://discourse.processing.org/u/adds666)\
**Post date:** [November 10, 2019, 1:48am UTC](https://discourse.processing.org/t/teensy-3-2-octows2811-adaptor-processing-error-invocationtargetexception/15365/1 "2019-11-10T01:48:37Z")

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Hello all,

New here - wanting to make an LED TV using Teensy 3.2 and ws2811 adaptor.

[https://www.pjrc.com/teensy/td\_libs\_OctoWS2811.html#videodisplay](https://www.pjrc.com/teensy/td_libs_OctoWS2811.html#videodisplay)

OS: Ubuntu 16.04 64-bit Intel® Core™ i5-2450M CPU @ 2.50GHz × 4

Got Arduino IDE 1.8.10 working after teensyduino 1.48 installer and programmed Teensy 3.2 on ttyACM0 with ‘VideoDisplay’ sketch from ws2811 examples folder.  
Installed Processing 3.5.3  
Loaded movie2serial.pde sketch from ws2811 examples folder.

> <https://github.com/PaulStoffregen/OctoWS2811/blob/master/extras/VideoDisplay/Processing/movie2serial.pde>

Experiencing the following error with no idea how to overcome - any help is appreciated  
Please let me know if you require any more input

Error message:

java.lang.RuntimeException: java.lang.reflect.InvocationTargetException  
at processing.core.PApplet.runSketch(PApplet.java:108 45)  
at processing.core.PApplet.main(PApplet.java:10613)  
Caused by: java.lang.reflect.InvocationTargetException  
at sun.reflect.NativeConstructorAccessorImpl.newInsta nce0(Native Method)  
at sun.reflect.NativeConstructorAccessorImpl.newInsta nce(NativeConstructorAccessorImpl.java:62)  
at sun.reflect.DelegatingConstructorAccessorImpl.newI nstance(DelegatingConstructorAccessorImpl.java:45)  
at java.lang.reflect.Constructor.newInstance(Construc tor.java:423)  
at processing.core.PApplet.runSketch(PApplet.java:108 39)  
… 1 more  
Caused by: java.lang.NullPointerException  
at processing.core.PApplet.dispose(PApplet.java:3823)  
at processing.core.PApplet.die(PApplet.java:3734)  
at processing.core.PApplet.die(PApplet.java:3744)  
at processing.video.Movie.initGStreamer(Unknown Source)  
at processing.video.Movie.(Unknown Source)  
at movie2serial.(movie2serial.java:63)  
… 6 more  
RuntimeException: java.lang.reflect.InvocationTargetException

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**Author:** ![jeremydouglass](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/jeremydouglass/32/20_2.png) [@jeremydouglass](https://discourse.processing.org/u/jeremydouglass)\
**Post date:** [November 10, 2019, 1:52am UTC](https://discourse.processing.org/t/teensy-3-2-octows2811-adaptor-processing-error-invocationtargetexception/15365/2 "2019-11-10T01:52:59Z")

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This looks video / GStreamer-related – somebody may chime in on that, as those things have seen some recent changes – but possibly see also past discussions involving Teensy:

[https://discourse.processing.org/search?q=teensy](https://discourse.processing.org/search?q=teensy)

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**Author:** ![adds666](https://avatars.discourse-cdn.com/v4/letter/a/eb8c5e/32.png) [@adds666](https://discourse.processing.org/u/adds666)\
**Post date:** [November 10, 2019, 8:22pm UTC](https://discourse.processing.org/t/teensy-3-2-octows2811-adaptor-processing-error-invocationtargetexception/15365/3 "2019-11-10T20:22:38Z")

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Strangely, just downloaded Processing on a Macbook pro and the same sketch runs fine with no errors