Preview pane error: Cannot read property 'maskModel' of undefined

Hi, I’m on version 4.11.2.6784.

I cannot preview my effect in the preview panel in Effect House desktop on Windows. The preview panel is completely white with red letters:
Cannot read property ‘maskModel’ of undefined

I have tried opening my recent projects, template effects and reinstalling effecthouse, but nothing works.

Also, when I click the ‘toggle preview panel’ button it gives this message:

Couldn’t close the Preview panel
Dock the panel first and try again

I am unable to create of edit anything, can someone help me out please?

Update: I have installed previous version v4.10.0.5233 and this one works. I guess I won’t be updating anytime soon lol

Hi! How did you install the previous version? I have the same issue and am on v4.12.2.2967