Blizzard has released a new patch right after the release of the new StarCraft 2: Heart of the Swarm.
If your single-player campaign was suddenly crashing whilst playing, then you better update your game to 2.0.6. According to the patch notes posted on the developer’s blog, Update 2.0.6 fixes “a crash that could occasionally occur while playing the Heart of the Swarm campaign.”
Starcraft 2: Heart of the Swarm is the second installment in a trilogy and was released two days ago on March 12 for the PC. Initial reviews are excellent and the game is unanimously accepted as a solid addition to the Starcraft series.