Riddler's Final Exam - BUGGED?!?

[BlackDragon]

So, after jumping through innumerable hoops to rescue Catwoman, I'm on the 'Final Exam' room. Move the empty spaces in the grid around by using the electromagnets, and Catwoman to weigh down select tiles. Then jump her to the ceiling to avoid buzzsaw-sweeps. Easy as pie! Except for the bit where you do the last of the three stages (two lasers in the bottom row), and then nothing happens. No buzzsaw-sweep, no commentary from The Riddler, no key unlocked. The last two lights on the big key-display remain dark. The two lasers have both turned green. Nothing happens. Nothing. I checked a video run-through for that part. I'm doing exactly what I'm supposed to. The lights are supposed to light up, the buzzsaws are supposed to sweep, the key is supposed to unlock. It doesn't happen.

I've reloaded my save twice. It keeps happening. Please tell me there's a work-around. I've waited nearly a year for this mess to get patched up to a workable condition, so if there's STILL showstopper bugs in it, I'm going to demand a refund and never, ever go near another Rocksteady(HAH!)-game.

[sidewinder_G]

I don't know what to make of it, man. But as I recall, the blades don't have to run throuigh the field for the final configuration of the riddle. Maybe. You simply solve it, the Riddler has no comeback (at that time) and you go back to the central room for the key to Catwoman's collar.

[BlackDragon]

Tried that. Actually, I mentioned that in my original post. The keyholder in the central room remains closed.

[AlphaKennyWhere]

That's really weird. Have you tried leaving and doing some other mission then going back to that? If he even lets you leave...

[BlackDragon]

No... but I managed to find out what caused it and how to avoid it. Apparently, it's caused by entering the secret room in the far corner and solving the 'riddle' there - so once I saved that 'till AFTER completing the big block-puzzle, it worked fine.

So not that hard to bypass. Still an annoying bug...