Can no longer build games after Build 294.10

Hello. I'm using Steam version of Clickteam Fusion (with 2.5+ DLC).

Clickteam updated itself about a week ago (from 293.10 to 294.10). I was going to build out a new version today, but the application says it's no longer possible.

Please login to see this attachment.

The first time building at one place it says "unknown error". Later times it says that "it is not possible to save to the location and requires administrator permission", even though I am an administrator.

It does the same for all projects, even completely empty ones

Please login to see this link. says 294.10 is beta build and I haven't selected Beta potion on steam.

I can no longer downgrade this version, because I'm using Steam version and I'm so pissed of, because my game is almost done and it needs testing.

Where is that Temp folder?

I'm using Steam version. It doesn't show any path there.