Out of memory related to ProBuilder

Hi

While using ProBuilder I suddenly got this error when trying to click on anything made with ProBuilder.

62431-error.png
It just happened out of nowhere. I have no idea how to fix it. This also stops me completely from working because I can’t touch pretty much anything without this happening.

I’ve tried to remove ProBuilder and open the scene without it, which works but when I add ProBuilder again it just crashes again.

So what could cause this and how can I fix it?

Seems like it was a problem with ProBuilder. My bad.

I downgraded to Unity 5.3.1p3 and it is now working.

Did you end up finding how to upgrade Unity? We have the same problem (updating Unity, which we need to do, causes this ProBuilder error). Did you contact the ProBuilder team about it? Do they have a fix?