I had the same issue although mine was caused by my dog who was unfamiliar with what a screen door is
. I did not have the right tool to remove the spline and there is a small corner nicked up a bit because of it. I was able to get it started out with a small nail and very small needle nose pliers, so if you have one of those pointy tools, that would work
. The spline on mine was triangular? I reused it and the regular spline roller worked fine.