Checked that:
I just loaded the game with explosive biters and pelagos with no problems on factorio 2.0.66
are you sure it's because of pelagos?
error suggest that explosive bitters texture is missing
try to download explosive biters again, and verify files integrity on steam.
If that won't help send me list of mods you are using. I ll try to replicate it and help
Hmm, I updated only two mods this one and frost biters. I've tried with only these three enabled and it works. I'll keep adding the list slowly until it breaks I suppose.
I made it worse!
Here's the mods that are incompatible in some way: Fulgoran Enemies / Explosive Biters. Not sure how they modify the spawner entity. But with Pelegos + either of those two it fails to find the sprite.
