resource pack

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here

What actually happened was...:
Describe what happened here

Steps to Reproduce:
1. i downloaded an resource pack my minecraft didnt open
2. so the resource pack was to hd and my minecraft crashed
3. and it said maybe try a lower resolution reesource pack but i cant open my minecraft so i have an iMac and its not as easy as an windows computer