Fit Spline slowing down, then stopping

Hello,

I am having a problem with my fit spline command with the "Select Chain" option causing Solidworks to stop working.  Below is a picture of what I am trying to create the fit spline on (highlighted section):

My fit spline seems to be working on everything else, but when I try it on this section, it starts working fine, then slows down along the path, then it just stops going and I am left with my mouse cursor as the right click for green check mark image.  No matter where I move my mouse, it stays as that image and I have to go to the task manager and end Solidworks.  I'm guessing it is just because the spline is so complicated, but that shouldn't be a problem for a program as powerful as Solidworks.  Anyways, any help on the matter would be appreciated.  Thanks.

Chris V

SolidworksSketching