Quote Originally Posted by Doremus Scudder View Post
Clear film with no edge markings = you fixed before you developed.
Two more possibilities: The fixer was a bleach-fix intended for C-41, or the developer was spent/oxidised. I don't know much about Ilfosol-3 and its longevity. Is it possible for that to be the problem?

All things considered, the wrong processing order seems most likely.