try finding the last numbered layer then count any text layers and duplications of other layers manually, reduce for any deleted layers. should save some time while bing fairly close.
just do create new layer, and see what it names it you have that many minus one, dont know if it includes adjustments though
Counting them manually doesn't take very long. I just go from layer 1 and count every layer including adjustments and such inbetween. And I believe the question has been answered well so I'm going to close this. :shaggy: