Encore CS5 Failed to initialize QuickTime, the question was asked before but in a different context.
OS: Windows 7 64 bit
Adobe Encore (CS5) : Version 18.104.22.1682
Quick Time: Version 7.7.3
Uninstalled Quick Time; re-installed Quick Time - did not solve the problem
Stopped the Windows Defender Service - did not solve the problem
Reverted to System State before Windows Updates (a day when I did not have the problem) - did not solve the problem