Default Calling not working in SlimKat

The G2 that I own is the Verizon model (VS980).

For me, every Slimkat update since 6.2 hasn't been working properly, more so in the calling area. I go to make a call in SlimKat 6.2, and it works just fine, and I've flashed every update since then, but calling refuses to work, so I'm forced to revert back to version 6.2.

Does anybody know what could be causing this, and how I can fix it?