Hey everyone, I was wondering if you could tell me why this is happening in the model?
It has a mirror modifier then a subsurf modifier as well.
I have tried reversing the normals, making the normals consistent, removing double verticies, mucking around with the mean crease and nothing seems to change it.
In this order:
Remove any internal faces
Remove doubles (W/remove doubles)
Recalculate normals (Ctrl+N)
If still not correct, display your face normals (N/display panel in edit mode) and manually flip those that are not correct (W/flip normal)
Can you post a shot of your wireframe of that area? You may have nearly-coincident edge loops, in addition to the other suggestions. One way to check is to select the loop at the problem crease, then expand the selection once using CTRL+NUMPLUS. If the selection doesn’t immediately jump to the next adjacent (and well-spaced) loops, you have two closely-overlapping loops in that area.