Croustian68
Refugee
All the files are modified 2 minutes ago i pick all of them ? i also have error back up file in region folder end in .bakHere is one chunk reset method: Start the game, go to the chunk you want to reset, destroy a block (but probably not the one you are standing on). Stop the game. Then look into your savegames directory. You should see a "Region" directory with lots of files ending in ".7rg". Move the file with the newest modify date to somewhere safe.
Done. If it doesn't work as expected you can undo the change by moving the file back into the "Region" directory.