Editing a single frame .btx file? (Heartgold Statue)

[Elyria]

Hello I am editing a few sprites and one such sprite is the pokeathalon statue sprite, it is stored as a .btx0 file with a single frame. It has to be renamed to .btx to open in the editor. This is the same as all the other files and may have nothing to do with the issue. When I attempt to open it in the btx editor it fails and closes the program. It is a minor asset to edit but I'd still like the option to. Any help would be much appreciated.

If anyone wants to poke around with it the statue in HG is in a-0-8-1-233 (female one).

[Elyria]

It seems to be many different files for no apparent reason. Maybe it just doesn't like certain numbers of frames? It refuses to edit 1 frame size, now I am trying a 12 frame and it won't work on either of my 12 frame animations. Is there another tool for btx editing? I am presently using "BTX Editor".