You probably have a "1.png" in the cache that corresponds to another animation that was created before quit-restart sequence. Maybe you want to purge the sprite frame cache (and possibly a whole lot of other things) prior to restarting.
I completely avoid "1.png" through 'NNNN.png' since in all likelihood all your animations will have them. Instead i use things like :
walk_classKey_upNNNN.png {up,down,left,right,idle,jump ... and any other map stance i need) fight_classKey_strikeNNNN.png {strike,hurt,dead ... for example)
classKey is {fighter,rogue, ... etc ... whichever unique soldier type I have)
and i name my plists/textures the same
walk_fighter_up-hd.plist (using texture packer, the plist embeds the texture name). fight_rogue_cheapShot-hd.plist (cheapShot is one of my rogue's skill in my current game).