Crashing on opening file

I’ve created a project in 4.12.5 works fine, having moved the project to my laptop that also runs 4.12.5 it gets to 96% and hangs?

Is there anyway of fixing this as the original machine I’ve developed on I no longer have access to and the project is pretty urgent.

Phew! Seems to work ok now!

But for some reason it doesn’t run with smooth motion, any ideas on how to fix guys