.

I know that I had to fix several icons with icon_size = 32

Your hydrogen isn't fixed.

weird, I don't have any problem on my side, for me, it's all OK, my game loads without problems and all icons are shown correctly
I didn't resize my icons to 64x64 but the code specify I'm using 32x32 icons and it's working perfectly for me
Maybe one of your other mods is changing something in mine?????? Could you send me a savegame with the error?

Diesel Locomotive Fix wants 64x64 icons, cause vanilla is moving to 64x64 standard.

https://mods.factorio.com/mod/Diesel-Locomotive-Fix

Denied! I really think this fix should be done by the diesel locomotive developer. I didn't do anything wrong on my side. But if you want so hard to use both mods you have my authorization to unzip my mod and change the icon size yourself

Yeah, I asked him about fixing it. He hasn't responded yet.

Well, vanilla icons are all going to 64x64, so...

Yeah, I've already messed with the mod for other things...