Hello all,

I have a strange bug in this mission.
After using the mutation machine I go in the portal, to go out of the professor's laboratory.
I get a long loading screen, and after that I hear Geralt makings drowning sound and I get the "you are dead" screen (all this while still in a black screen).
Game patched to the lastest version (GOTY)

Already tried to Re-Install the game.
Already tried to load a previous savegame.

Hello I have exactly the same problem, have you found any solution already?
Thanks

PS: Going to version 1,31 didnot fix it.

Going through the portal deposits you back underwater, near where you first entered the underground dungeon, hence the drowning. It seems that the game actually resumes, but visually it's stuck on the loading screen. For starters, try holding the spacebar (or controller equivalent) to swim back to the surface. Then try alt+tabbing to your desktop and back, that sometimes resolves the graphical issues.