Apple has released an update to its pro photography program, Aperture, bringing it to version 3.4.3. The update exists to fix a single, specific problem: for some users, the program would prompt for a serial number on every launch. The update is available through Software Update for version 3.4.x running on OS X 10.7.5 and higher, or 10.8.2 and higher. The correction comes on the heels of version 3.4.2, released at the beginning of the month, which brought a number of new features to Aperture.