I've completed 2 of the 3 chalkboard puzzles in the laboratory but the third one (the one closet to the locked door) isn't working. When I click on the first letter of ta sentence it initially shows the hand and then changes into the magnifying glass without pulling the letter to the bottom of the screen. Anyone else have this problem?

That can happen sometimes if you start arranging the letters before having all of them on the bottom of the board.

In any case , if it's really a bug you have there and you need a savegame made after doing the 3 chalkboards let me know and i'll upload it for you.

I've got the same bug just minutes ago. My only solution was to load previous savegame and find all letters on chalkboard before arranging them.

Got the same problems with the chalkboards, but managed to go through them by save/loading.

Now I've solved all the messages, but if I try to access the door with the microphone lock -thingy either of two things happen: a) no options to choose from in the dialog box or b) the game crashes.

Anything I can do with this one? Or if someone has a save game just beyond this point, wouldn't want to miss all the rest of chapter...

I don't suppose anyone has a saved game that I could grab? Like a muppet I've only used a single save throughout the game and am stuck here.