Sometimes if there is something wrong with EASISTAT or one of the other programs your computer is running at the same time then your computer can "hang up" or "crash". If the computer hangs up or crashes then none of the keys you press will have any effect, except sometimes to make a beeping noise. If this happens you are probably going to have to kill the program or possibly reset the computer. Your computer will not be damaged in any way, but any data or results not saved to disk will be lost.
Bugs
Apart from causing the computer to hang up, other symptoms of bugs are that the program produces long strings of meaningless characters and beeps, or very large long numbers which are obviously nonsensical. Bugs may also simply produce incorrect answers. I are not aware of any that do this, but if you suspect their existence then please let me know at once.
I would like to fix any bugs in the program, so please do let us know of any circumstances which produce a crash or garbage output. If you cannot see why the program should have gone wrong at this point then please supply me also with as much as possible of the following information:
1. Contents of your data file.
2. Exact sequence of commands leading to crash.
3. Version of EASISTAT (displayed when program is first run).