Ok so i bin seeing alot of peps having probs with minecraft after they mod/dupe their things and after the game is just f-up it cant b save, so made this list on "what/what not" to avoid yr game save from being f-up well most of the time. 1. The first RULE and most GOLDEN RULE is that u Always Back up yr save b4 u try anthing so if it got f-up u can always replace it and find out where u got it worng. 2. When using the mod tool never Stack items that r not stackable if u do u will 100% f-up yr game. ect:--armor should b only 1 not 2or more. 3. Never over use the mod tool like having to much items at 1 go this will coz the game to load very slow or just freeze on the loading screen. ect:-- moding 4 or more people invertory at once. only do yr invertory and only yr invertory. 4.Never change or stack more armor dan 1 this give u infinite health u will die but to u it look like u have lots of health and when u do die u will b at a loading screen with no loading bar. 5. Never put things that r not in the game yet if u do this will 100% freeze yr game. 6. If u think u dont want to use the mod tool its ok the other way u can get lots of the same item is u can ether do it without cheating which will take some time but will 1000% b safe or u can Dupe this is not 100% safe. 7. When DUPING it coz the item to LOPE over and over this coz the item to b INFINITE but never dupe every item just dupe the item u need and only what u need not what can b made very easy. 8. Never dupe and keep the item in yr pocket and den load yr game save in the mod tool this will give u an ERROR in the mod tool. Hope this helps yrs Shadow.