Blue Screen of Death
With the release of Mac OS X v10.5, users running an outdated copy of APE (2.0.1 or earlier) began to report problems with their upgraded Leopard systems. The problems occurred when using the "Upgrade" option rather than the "Erase and Install" or "Archive and Install" option. Symptoms included hour-long "blue screens" (known as the 'Blue Screen of Death') on restart and systems hung inoperable for hours at a time. Users gradually discovered the error and were able to fix it by updating their installation of APE. On 27 October 2007 Unsanity alerted mailing list subscribers of the issue and advised them to have the latest version of the Application Enhancer framework installed prior to installing or upgrading to Leopard.