Minecraft Forums

my game is not saving any of my builds but i keep stuff in my inventory i found mod spawner and got the loot from chest then turned it in to xp grinder played for hr or so then saved and quit when i logged back on later i was falling in blackness if i looked up i could see a little blue sky then i spawned inside of the land i had dug out for the xp grinder and about died had to dig out and ever thing i had made and the chests i had looted were back but i had all the loot from them i can loot them and log off and back on and keep looting over and over and over and over.............................. anything i build / destroy is undone but i keep things i pick up ?????? i am new to minecraft i have had it for3 months and this just started happenning 2 days ago

i have deleted and reinstalled and updated to 1.4 if i play for long time it saves somethings but not all id say about 15 mins of work doesnt save but i keep stuff in inventory and i can go back and mine the same stuff over i have alot going on right now will be few days b4 i can do and more test i will update then i want to get this fixed and im not sure when this started happining i do know when i fires started playing everything was fine just b4 1.3 not sure if it was 1.3 that started it or not