I downloaded the trial version of the Japanese Dictionary edition for PC.
I single clicked on a stack and then pressed the up arrow on the keyboard, and I got an overflow error and the program terminated abnormally. It did not save any of my work either.
Maybe I can find out what is going on on your system with the answers to the following questions:
Does this happen all the time, with all files, with all stacks - or did it happen only once?
What Stackz edition and version are you using?
What OS version and language are you using?
I can't seem to repeat the problem now. I was using the 2006 Japanese Dictionary version.
I'll let you know if it reoccurs.
Thanks,
Rick