Corrupted sprites, in need of help

[MegaEdit]

Someone had directed me here for help

So I have this issue with my custom sprites. I was in HTE and 3 of them said invalid sprite, I have no idea what had caused this it looks like this Imgur .com/LdOtTan. I noticed when I went into nameless sprite editor that my sprites were corrupted. Originally 3 of them looked like this imgur .com/Apw2mDF. I went back and re inserted the sprites I had made for those 3 and now they end up like this imgur .com/KdkDGpI, but this only happens if I fix one of the 3, one is fine while the other 2 are corrupted looking like this. Does anyone have any idea what could be causing this and what I should do? I don't want 4 months of work gone.

remove the space inbetween .com since it won't let me post links

 

[Dyskinesia]

Eh probably just go to a backup from right before it got corrupted and use a different tool.

 

[MegaEdit]

Use advance trainer instead.
It's not buggy

Well the issue itself is not the trainer editor but my sprites are being corrupted in nameless and I don't know what has caused this

 

[MegaEdit]

Eh probably just go to a backup from right before it got corrupted and use a different tool.

I usually only keep backups of more recent builds of my hack, and all the ones I do have are the ones with corrupted sprites in them. Even if I did have an old one that didn't have this issue, I would still like to know what caused this problem in the first place before I proceed to keep doing this

 

[esperance]

I'll be the first to admit the way I handle sprites in HTE is not the best. Sometimes it will say invalid sprite even if it works in game, so be sure to double-check just in case.

 

[MegaEdit]

I'll be the first to admit the way I handle sprites in HTE is not the best. Sometimes it will say invalid sprite even if it works in game, so be sure to double-check just in case.

I did double check in game when I noticed this issue, the battle will start then freeze on a purple screen