Thanks Chas, I hope you see far fewer crashes now. The real test will be when you're not playing levels you've already solved (doing lots of undos, etc).
Yes I personally love developing for a device with limited resources, you need to think a little more outside the box. I love how small and simple Addled levels can be and it still can be hugely challenging to solve.
Let me know if it starts crashing on you again.
regards,
Stephen