Yea that can happen try to do just one at a time from now on. I think it's because the cheat doesn't know which one to set the 00 to so the game messes up.i just tried the cycling item cheat, drop the items once i like them to pick them later , didn't realise some of them despawn , i forgot i placed to much item on the ground, so i started again cycling all the item i like, then after 2 hr of doing so my screen went black and i didn't save lots of good fish right there and kasumi fav food XD
Just use the cheat at your house and then put the item you want in the box at home until you get finished finding what your cycling for.