Hmm, interesting. It is probably something about your hardware that is different from mine. When did you buy your DSO Quad?
You can try holding down button 4 for about 10 seconds. After that, wait a few seconds more and reboot the device and check if there is a file called memory.dmp.
If the application is not completely stuck, holding down button 4 initiates a memory dump. It should also show a message on the screen, but if my LCD code is busted it won’t.