Both cash registers at my grocery store crashed today...
The units are six years old so my thought is that the battery backup died enough for the programming data to hit the bit bucket.
Have a new register and am busy programming it - weekend is coming up so need it today.
The Sharp software for the XE-A506 was really nice. Stick a USB cable into it and you can do the entire register in ten minutes.
The software for the successor - the XE-A407 - royally sucks donkey balls. Much smaller set of functions. Version 1.0.0.1 released in 2011. It is supposed to save to an SD card but it will not.
Sharp-USA - shame on you!