Quicktime is a Core component of the OS and is built in, what you moved to the trash was just the application interface, therefore the quicktime core component of OS is still a newer version.
Try an archive and install of the OS and then update only the OS and not the quicktime. However the current version of Quicktime is 7.1.6, it is possible that the update has fixed or changed any compatibility issues, so I would try updated to the latest first and see if that helps.