Along with DirectX 9.0c, Europa Universalis requires additional Microsoft software to run on Windows. These may already be installed on your computer, however if you are having problems, reinstalling them may help.
The Europa Universalis Complete edition contains a tutorial mode that does not function, and Paradox has advised players not to use it. Beginning with the second tutorial, the game may crash when the tutorial is activated. Renaming or deleting the game's music folder may prevent the crash, at the expense of the music.
This occurs when playing DLC Heir to the Throne. It is fixed in Divine Wind, or in one of the released beta patches.
Downloading the beta patch requires you to register your game with Paradox Plaza.
If the music doesn't play, installing k-lite codec pack may correct this.