The following steps are known to cause the above symptoms:
1. Launch Dispatcher.
2. Click the "Scan" button.
3. Select parameters of Color, 600 dpi, and perhaps 3.38" x 2.61" or other dimensions.
4. Scan
5. When the scan was completed, select the "lasso" tool.
6. Using the lasso tool, select a circular region that takes up about half of the area of the window. 7. Using the mouse, "drag" the selection so that the majority of the selection is outside of the window area.
7. Drag the selection back into the visible window area.
8. Repeat steps 6 through 8 several times.
RESULTS:
After repeating steps 6 through 8, anywhere from 2 to 20 times, you are almost guaranteed to experience the problem. Two failure modes are:
Symptom 1:
Dispatcher hangs or infrequently crashes unexpectedly with a Type 2 error. Force-quit Dispatcher to exit though your system may remain unstable until you reboot.
Symptom 2: When manipulating the image, garbage pixels or the edge of the selection marquee becomes distorted. Clicking at the top of the active, Dispatcher's menu bar may return you to the Finder. When moving your scan window around picture or window 'remnants" may appear on the screen.
Possible workarounds:
Saving your scanned file prior to manipulating the image may reduce the frequency of the failures. Minimize using the lasso tool may too help. If the problem persists, consider opening and manipulating the image with a program such as Adobe Photoshop.