Hopefully this question has not been answered a billion times, I searched heartily but perhaps I missed it:
My first custom rom was SC 2.9. I noticed all was working well, and I had a choice of all these lock screens. I use the pattern unlock, but I played around with the different lockscreens and left it on AOSP. I flashed the 2.9.1 patch, then the 2.9.2 full ROM in CWM. When I got a call yesterday, I realized that there is no Ignore function on the AOSP lockscreen, so I went to change it back to Puzzle Unlock, since that has Answer, Hang up, AND ignore options when a call comes in. However, I go into my display settings, and regardless of which one I pick the AOSP stays active. Any ideas how to get my puzzle lock back?