The blank note won't work.

[Lorkas]

Alright, so it won't let me use the Blank Note on the UV light in the worm researcher's room, the game just suggests that I should start thinking straight which is an insult. I've tried everything up to the point where my brain is about to cauterize itself from the vast amounts of frustration, so can anybody drop me a hint?

I've played the game thoroughly, picked up every note and read it, examined anything that can be examined. This is the only part in this masterpiece that has forced me to look up a walkthrough.