Hmm, now I am confused. When I did a search in the chargen.pak for *fish*, four files showed up. fishingpole.mainhand, character_large_fish.anim, fishingpole_hurt_fb.png, fishingpole_fish_front.png, and fishingpole_walk_mb.png. None of these files have 4 X 12 columns (in the .png). All along I assumed you were telling me that I would need to somehow combine the fishingpole animations (by themselves found in fishingpole_fish_front.png) with the empty exported character animations in order to create the character animation with the fishing pole, just as you did in your tool. Again, an assumption.
But perhaps I confused you. When I export my character with the fishing pole, I do get the walking animations with the fishing pole and they are in a 4 X 8 layout in the exported file. But where the animations should be for the casting with the fishing pole just has the character without the fishing pole and they are in a 4 X 5 layout. Again, regardless of what 3 letter code I use, it all looks the same.
Dblhack