This sounds really weird, and we're unable to reproduce this here at the office.
If you use Steam version, you could try to verify the files. Rightclick Trine 2 in the Steam library, choose "Properties", choose "Local Files" tab, click "Verify integrity of game cache..." and wait.
Out of curiosity, have you tried enabling multiple keyboards from the options.txt instead of the ingame settings?
1) Close the game.
2) Delete the options.txt file (from %APPDATA%\Trine2\). Do this to make sure you have a clean options.txt.
3) Start the game once, close it afterwards (to create a new options.txt)
4) Find the following line and change the "false" to "true":
Code: Select all
setOption(inputModule, "MultipleKeyboardsAndMiceEnabled", false)
5) For now, don't touch anything else in the options.txt.
6) Just to be sure, take off any extra keyboards, mice or gamepads from the PC before opening the game.
7) Don't touch anything in the launcher, start the game.
Other thing to do with either Steam or non-drm version would be to simply reinstall the game, in case something got corrupted during the install.
Does it still bug? If so, I'd want to know a few things about your setup.
Which operating system do you use?
Which language do you use in your operating system, and which language would you want to use in Trine?
Do you use a non-drm version or Steam version?
Do you have Goblin Menace or the Complete Story edition?
Do you have any special keyboard drivers (razer/logitech/etc)?
Let's see if we can get this mystery solved.