Printer thinks it's done but it isn't

[alathIN]

Still having the same problem. The printer quits before it's done.

There is something wrong with the feeding/extruding. I realized what the printer is doing is "going through the motions" of finishing the job, but not actually laying down any plastic.
I thought I might be having a clogged nozzle problem so I changed the nozzle, then completely replaced the hot end.
Then I realized that I was seeing slippage from the feeder wheel, so I replaced that (the teeth were pretty worn).

My last failed print, the feeder wheel had chewed its way through the filament so the length of filament in the tube was effectively broken off from the filament on the reel.

I'm currently set to a feed rate of 45mm/s with a .4 nozzle which should be OK? Also, if I'm trying to feed too fast, I don't understand why it would lay down the first several layers well then suddenly start chewing through the filament halfway through the job