Solved. For the archives: allocating an QCRenderer fails without
any console message et al. if the application is - like e.g. the
XCode Cocoa Document stationary - linked against the
QuartzCore.framework and not Quartz.framework.
B-/// Well, I thought that was the whole point of frameworks such
things do not happen - being able to use an header like <Quartz/
QCRenderer.h> and then not linking against the required libraries...
I think that's expected behavior when zero-linking: missing
frameworks are not reported at link-time.
