Try reinstalling it.

If the problem still persists, maybe your OS wouldn't support it anymore, or upgrade it to SP3.

Did it 3 times already Win XP has SP3 installed

I believe XP support for LU was ditched a while ago

So that's the deal. Alright thanks for your reply

Hi
Recently I've managed to find my old PC with Win XP x86 installed on it. Because of it being outdated I decided it might be used for running older games. After recalling my first LU experience I have tried to set it up again. After installing both: game and LU I received an error saying that LU is not valid Win32 app. I was surprised because couple of years ago it ran smoothly on the same PC.

My question is: What happened to 32-bit support?