Downloading individual .exe files from third-party sites is and often leads to malware infections. Instead, use these verified methods to obtain a clean file:

Incompatibility with modern graphics card software.

In the file properties, set compatibility to "Windows 7" or "Windows 8".

The file is the 64-bit "ship" (final release) executable responsible for running the game's campaign. Errors involving this file—such as "s1_sp64_ship.exe has stopped working"—are common and typically stem from:

Missing or damaged data within the local installation.