"Synchronizing Multiple Space Centers" script errors

ArrowType

This script is failing in RoboFont (Version 4.1 (build 2111241049)):

https://robofont.com/documentation/how-tos/mojo/space-center/#synchronizing-multiple-space-centers

It will crash if I try to run it, then open two fonts and open their space centers.

If I am careful to open the fonts and their space centers first, I can get this traceback:

Traceback (most recent call last):
  File "synchronizeSpaceCenters.py", line 81, in <module>
  File "/Applications/RoboFontBeta.app/Contents/Resources/lib/python3.7/mojo/subscriber.py", line 3791, in registerSpaceCenterSubscriber
  File "/Applications/RoboFontBeta.app/Contents/Resources/lib/python3.7/mojo/subscriber.py", line 3636, in addSpaceCenterSubscriber
  File "/Applications/RoboFontBeta.app/Contents/Resources/lib/python3.7/mojo/subscriber.py", line 3678, in _startSpaceCenterInstance
  File "synchronizeSpaceCenters.py", line 19, in spaceCenterDidOpen
  File "/Applications/RoboFontBeta.app/Contents/Resources/lib/python3.7/vanilla/vanillaGroup.py", line 127, in __setattr__
  File "/Applications/RoboFontBeta.app/Contents/Resources/lib/python3.7/vanilla/vanillaBase.py", line 56, in __setattr__
  File "/Applications/RoboFontBeta.app/Contents/Resources/lib/python3.7/vanilla/vanillaBase.py", line 374, in _setAttr
AssertionError: can't replace vanilla attribute

I’ve tinkered with it a bit, but I’m not quite sure how to fix this.

abc123

@ArrowType Whaoh I came to post this issue too!

ArrowType

Awesome, thanks Roberto!

The workaround seems to work (at least on my first try)!

Thanks for looking into this and making it work. :)

roberto arista

Congratulation! You found a bug :)

Or, to put it better, an edge case that will require a small new piece of API. Here you'll now find a workaround working with the latest stable release 4.1
https://robofont.com/documentation/how-tos/mojo/space-center/#synchronizing-multiple-space-centers

Here instead the same script with the new API that will be available with the public release of 4.2
https://robofont.com/RF4.2/documentation/how-tos/mojo/space-center/#synchronizing-multiple-space-centers

The original script triggered a circular motion of events raising a RecursionError in Python that crashed the entire app. Now, it should work fine.

Let us know!

ArrowType

Awesome, thanks Roberto!

roberto arista

👋

I can reproduce the issue, we will let you know soon about it!

SOLVED "Synchronizing Multiple Space Centers" script errors