Custom kits problems

Hi,

When I import custom kits into the game that I've made through photoshop with the templates etc, the game always always always crashes the week or two after then corrupts the save.

Anyone any idea how to sort this?! I'm enjoying my current save and I'm scared to risk it.

I don't know what I could be doing wrong, I've watched countless you tubers manage it fine and never crash etc

Have you resized the graphics you've made, i.e. kits, to the right size? Saved it with transparency etc...?