updated 09:10 am EDT, Wed July 18, 2007
QuickTime 7.2 issues
Apple says it intends to examine problems users are having with the recent QuickTime 7.2 update. According to reports, conflicts have been occurring with Code Fragment Manager applications, among them Microsoft's Word, Excel and Entourage. Apple itself explains that it has "received a few reports that the QuickTime 7.2 update may cause issues with some Power PC-based applications running on Intel-based Macs, and we are looking into it."
The update was actually intended to fix a number of bugs, in addition to providing full-screen viewing and improved H.264 support.
A more detailed theory is that the issue stems from Rosetta, which emulates PowerPC code on Intel Macs. QuickTime 7.2 apparently breaks an aspect of Rosetta, making it impossible to run older Java code that relies on PowerPC stubs. The suggested solution then is to revert to QuickTime 7.1.6 using a special tool, and then reinstall the Mac OS X 10.4.10 update. Should some of the Java libraries be broken, copying them over from another user is said to be an option.