Default JMT update broke my gps

I'm fairly noob, using one of the JMT roms. A couple weeks ago a JMT update downloaded from the Play Store. Ever since my GPS cannot be turned on. When I try I get "System UI has crashed". This happens when using the menu bar button, or going directly into settings. I've tried reselecting North America under the GPS fix option, but it has not helped.

Any ideas?