Irritated Spork

Oh so like.. Everything's just disappeared? No way to un-empty it?

So basically, I keep getting this error message every time I try to open my old Pokemon Black save file even on the latest version of PKHex. It's completely unedited as far as I'm aware but it just never works. It's definitely not just a PKHex thing since the save file won't load anywhere else either, like when I try to load the game with it nothing happens, so basically I was just wondering whether or not it actually is corrupted and if so is there anything that can be done about it. Just really want to know since I haven't seen this save since about 2012 as that's when it initially stopped working for me. I have attached both the PKHex error message and the .sav file itself for convenience and I hope something can be done about it. Cheers for any info given in advance. Pokemon Black (U).SAV