Hi Ryan,
I’m going to guess it isn’t WC Vendors related.
http://hotrodresource.com/store/hot-rod-accessories-hot-rod-resources/tuffrides-8-pack-50-cal-black-with-brass-tips/ — White screen too.
Chances are, your PHP memory limit is still set to 40M (40MB). Bump that to 128M and I bet you’ll see this problem disappear. 🙂
https://docs.woothemes.com/document/increasing-the-wordpress-memory-limit/
Cheers
Ben