Replaying. I have caught fireflies at night and released them the next morning. Then I realised that I forgot to buy a teleport pill before going to Tyr, so I restored previous night's game. And now I can't release the fireflies! I only get a message of "That didn't do anything useful" when clicking them on the darkness. It seems that when the firefly jar is not the last item, this bug occurs.
1000th replay of this section...
Edit:
NOOOOOOOO!!!!!!!!!! Now even if I return to the previous evening and go to the swamp to release the fireflies on the same night, I get this message. Please help me! I don't want to start from scratch again!
Have you tried clicking the jar+fireflies on Mr. Roehm instead of the darkness at the screen immediately north of where you found Hobbs?
I never came across this in any of my testing of versions 1.0 & 1.1.2 (usually I had problems
catching the fireflies, not releasing them), so I honestly can't say this is the fix -- unfortunately, I'm not at home to test this out at the moment...
OR, since you released them during the day in the swamp without problem, perhaps you aren't meant to release them at night? Can you release them the next morning, as before?