Sarah_Sims brought to my attention that my mod, Fixed and Updated "Working Bulletin Board", conflicts with
So Many Shiftables! And a little more by heaven (heaven_ClutterWallCorkboardShiftable.package in particular).

If they are both installed, if you select the corkboard from the buy catalog the game freezes.
I really don't get how that is possibile, since her mod overrides the OBJD (I think it just sets
the flag to move the object up and down a wall) and mine overrides the OBJK.
Any idea how to make the two mods compatible with each other?

EDIT: Oh, false alarm, nevermind. I misunderstood what Sarah_Sims was telling me.
It seems like it's a known problem of that mod (or of the game) and not a conflict. Sorry.