From InfoWorld: Apple has apologized to developers for the snafu last week that sent Mac users scrambling to reboot and re-enter Mac App Store credentials when their apps refused to launch.
"We apologize for any inconvenience to you and your customers," Apple said in an email to OS X developers, including Donald Southard, Jr., who posted an image of the email on Twitter Tuesday. Southard is the creator of the Mac utilities Watermarker and Thumbtack.
Apple also explained the cause of the Nov. 12 fiasco, saying that although it had issued a new certificate for signing Mac App Store purchase receipts, a "caching issue with the Mac App Store" meant many users had to restart their machines and re-enter their Apple Account password. In some instances, app owners were forced to delete the apps and re-download them from the store.
The problem impacted most if not all paid apps bought through the Mac App Store. The bulk of paid apps regularly check with Apple's servers to make sure that a receipt exists for the purchase before running.
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