AND please use a meaningful thread title. We KNOW you're in need of help, or you wouldn't be posting. Use terms that give an idea of WHAT you need help with.
And getting back to the topic, there could be two reasons for this:
1 - you really HAVEN'T deleted all your custom scripts (it's not uncommon for someone to add a script and forget to name it in the box at the bottom, so it just LOOKS like an empty slot, but it's really a script there). Move through all your script slots, one by one, and see if there's one there with an unnamed slot but with an actual script.
2 - you've actually used the name _battler on one of your enemies in the Enemy tab. Look through them to see if there's one that doesn't have an image. This could be especially the case if it happens on the same map all the time, but not on other maps, so it's only in troops with certain enemies.
If you DID have a script that requires battler sprites with _battler as part of the name, I'd say it's more likely to be the unnamed script issue.
