Project built in windows, freezes editor on Mac but only on one level

So I built my project in a windows environment. When I open my project on the mac, everything seems to work just fine. Except 1 of my levels locks up the editor and makes it not responding. Basically as soon as I try to open the level the editor becomes unresponsive. All the other levels work fine and the level works fine in windows. Not sure where to start with this one.