Whenever I try to launch the Blow Up 3 installer, it crashes and my Mac generates an error report. Why is this happening and how can I fix it?
The most recent version has 10.10 compatibility updates which broke Blow Up 3 for 10.6 and 10.7.
The solution is to use the version just before the 10.10 update. That version will install and work just fine on your computer.
You can download it from here.