Help needed recovering corrupted .bin file

[Ivan_Cal]

I was working on new artwork, and apparently managed to corrupt my .bin file. I tried to open the same rom on the gens emulator and the Sfeditor, now it will open in the emulator but not the SFeditor. I have tons of artwork that I wanted to share with the community, for example: different portraits for promoted and unpromoted stages of every character, new/reworked battle animations for the characters that didn't have new ones, etc.
I really want to recover the images i order to be able to post them. I hope someone can help me recover them. I'll post the damaged file here.

This is the link to download the modded rom. As I said, it can be opened in an emulator, but not in the shining force editor.