[WFRP4e System] V10 Testing 5, build 279. Error: Canvas drawing failed: Cannot set properties of null (setting'_parentID')

[moo-man]

I Just did upgrade to V10, and I am struggling with an error when I want to activate or switch to a new scene: "Canvas drawing failed: Cannot set properties of null (setting'_parentID')"

This happen when I want to activate a new scene, or I want to switch from one to another. The same scene can be activated when I first run the program, and give me back the error when, for example, I want to switch to it. So it seems it doesn't depend from the scene. I am using both official Cubicle 7 prodocts, both homebrew scenes, it doesn't matter who drew the scene.
From: LelloBigenda#3005
foundry: 10.279
wfrp4e: 6.0.0