What operating system are you using? Did the program used to work? On the same operating system?
Have you manually gone to Windows Update to ensure that you have all of the updates, including non-critical updates that don't install automatically?
Have you ensured you have the latest Quicktime, per the program's requirements?
Thanks so much !!!!....I had never used APE 9 before and I don't ususlly use Quicktime. Downloaded Quicktime and APE 9 installed.