ok, here is what I managed so far:
when building and running the revision 42 (from within Xcode), I get no errors in the console, neither with the release nor with the debug build (is that proper english ? :))
I can also choose which window to scan and the window frame is resized and fits the intended window. The preview window is also working.
when I try to use the Jitter client, I can see the screen.app as a available server but I can’t get the scanned image to be shown in the client window.
well, when I tried to run both release and debug builds by double clicking in the applications built in the build folder (within Syphon implementations) I can’t see all the open windows and when I try to chose the desktop the app crashes. weird, hein?