Just been sending some emails when the message 'Stack Overflow at Line 56'
I'm sure you all know what this means but I am rubbish at computers.
Can anyone enlighten me?
Computer stacks are as they say just a stack of memory addresses. Data gets put on the top of the stack and gets removed from the bottom. The terms Push and Pop are often used to describe the process. Obviously in your case the number of empty stack addresses have run out and can't handle any more input.