Highend will not load

It comes back with a internal server error. I am trying to replace Pegasus with Highend on my wordpress accoutn: christmascountrymom.com but it fails to load. It did come up with a Jetpack problem, but that resolved itself and then the home page loaded. When I tried to get to the other pages, all failed. No matter what I click on, it goes to an “internal server error”