The application could not be opened because QuickDraw 3D could not be found
Since the application has to run even if the user does not have QD3D, what
should I do ?
A You are "hard" linking to the QuickDraw 3D shared library. Try "weak" linking
to the library, instead. With Metrowerks CodeWarrior this is trivial: simply
select the project window, click on the small triangle on the right side of the
window, and check the Import Weak option from the popup menu. Use the gestalt
selector for QuickDraw 3D to determine if the library exists, and take
appropriate action if it does not exist (to avoid making calls to the
non-existent library).