If you have a program that can open .jar files (7-Zip found
here works really well. Looks like a sketchy website, but it's safe), then you might be able to edit the files of Ender IO to not have a blacklist on what it can spawn. Not sure where that'd be, just making it up off the head. Or you could go into your mod options in-game and find Ender IO in them, there might be an option on the blacklist in there. Just ignore this post if there's no option to disable the blacklist.