Access Violation triggerd by ALT key

vvvv beta bug
1

if I press the right ALT key (on an external keyboard the ALT GR key) this window pops up:

https://vvvv.org/sites/default/files/imagecache/large/images/accessviolation.PNG

2

cannot confirm.
(on a vanilla b26 started up via dblclick on vvvv.exe. with no patch opened)

3

see https://discourse.vvvv.org/