Hello :)

I've bought RCT1: Deluxe on Steam and eventually it worked for me. Unfortunately I cant save anything. So i'm building my park, i want to save and then i'll get the message: RCT.exe stopped working.

I'm quite desperate now 'cause i'm messing with for a week now..

Can someone please help this guy to relive his childhood? :D

I know this is about two months late, but if you still have the game and want to get it working, try these.

If you're on a Windows 8, you'll need to use the following guide. It works for both Steam and GOG. If you're on a Windows 7, you'll need to check 256 bit color, it'll be there where the "Reduced Color Mode" is for Windows 8.
http://steamcommunity.com/sharedfiles/filedetails/?id=282196403

If this works for you, you may experience some issues with the game. In that case, here's a guide I wrote on some of the most common bugs and how to fix them.
http://steamcommunity.com/sharedfiles/filedetails/?id=275518448

If you have any issues aside from this, just say so and I can help out a bit more.