Syphon inconsistent behaviour and VuoCompositionLoader not responding

Steps causing the bug to occur


  1. open the composition attached.
  2. run it
  3. open FaceOSC Syphon
  4. Stop and run it again
  5. stop

How did the result differ from what you expected?

After point 3, I’d expect Syphon stream coming from FaceOSC Syphon to be shown.
After point 4, I’d not expect the second syphon patch would appear active in show event mode - there’s no syphon stream coming from vuo.
At 1:07 of the video, you see in syphon recorder the FaceOSC stream disappear - very strange. This happens just with vuo patch running.
After point 5, VuoCompositionLoader is not responding and i must force quit it.

When did you first notice this bug?

yesterday, but was the first time trying this patch.

Have you found a workaround?


Other notes

  • Vuo version: 0.5.6
  • macOS version: OS X 10.8

syphonbug?.vuo (2.48 KB)


Thank you for uploading the composition and the clear report. I just confirmed it and we’re scheduling it for work.

Hi, @cremaschi. We believe we fixed this issue in Vuo 0.6.0.