I just downloaded the newest version of Prism, and Mac OS 10.4.11. Put a MOV file in to be converted to FLA. I just keeps crashing and closing. File is less than 30mgs, but have tried with smaller files. Not sure why. Here is part of the wording from Apple report if it helps.
Link (dyld) error:
Symbol not found: _open$UNIX2003
Referenced from: libavformat.52.dylib
Expected in: /usr/lib/libSystem.B.dylib