Innershadow watermarks on large output images take long time to render, in which case the program may looks hanging. A test on a 3GHZ PVI machine may take over 10 hours to render a innershadow watermark on output image size of greater than 12 MegaPixels. We recommend to use web resolution as output.
Program can also hang if some unhandled exception occurs.
In both cases, you can use Windows taskmanager (press Ctrl+Alt+Del) to end the program.