Well, if this is indeed a bug, post your capx and the specs of your computer as asked in How to report bugs.
I've had my fair share of crashes too, and posted my capx for Ashley to check out.
If you want to keep it private, send it directly to ashleyllh@scirra.com.
For now, I'll let this topic here, we will see if you complete it and if Ash feels it is adequate to move it.