Hi,
I just recently recently bought The Ultimate Doom as it was on sale. never had a problem with anything from GOG before. See DosBox appear in the Taskbar goes to a black screen with white line think its going to load then it just goes back to my desktop and the DosBox has closed. No Game :(

Any tips

Dwarfboysim

Run the game through a source port. GZDoom is often recommended, but there's a variety of ports available to choose from.