Not sure about cover floader, I use wii flow and it works perfectly. Try choosing alternate dol method, and choose from disc. If this doesn't work you'll need to put the smnp.dol (a main.dol replacement) on an sd card for the game to pick it up. Search for the main.dol fix. There may be other versions knocking around where people have integrated this, but I got mine to work straight away so I never bothered with anything else. Been busy finding a fix for CSI Deadly Intent for our lass lol.