I'm using SonMapEd to edit and see which sprites have frame 1, 2, etc.,
This frame shows the number 29: http://i.imgur.com/2nZBnzO.png
,but in the animation file I opened with notepad+, there's no number 29. Keep in mind I already changed some of the animations in the file, and it worked great.
I'm using this disassembly: http://www.mediafire.com/download/szobtz41bo3shge/S3K+Dissasembly.rar
and this animation file: S3&K Disassembly\General\Sprites\Sonic\Anim - Sonic
Sorry about the format! Don't know how to hyperlink yet.