INVedit

AVG says this is Adware/Spyware
It's called a false positive. It seems like only AVG has this problem, any other antivirus programs are fine with INVedit. However, this is your decision. There are alternatives for editing inventories, so go check them out.

Error messages "The application has failed to initialize properly (0xc0000135)"
and "Unable to find a version of the runtime to run this application"
and "Could not load file or assembly 'System.Core [...]' or one of its dependecies.":
Make sure you have .NET 3.5 installed and working correctly. .NET 4.0 doesn't do the job. If you're not sure, try to reinstall or repair it. If that doesn't fix it, please send me a PM.

Error message "Couldn't find NBT.dll":
Some people seem to have problems extracting the program correctly. Here is what to do:
If you open the .zip file there should one folder inside called "INVedit". You have to extract the full folder and not just start the .exe within it. If you do that, only the .exe gets extracted temporarily and it won't be able to find the other needed files. Just drag the folder onto your desktop or personal folder, then you can proceed as usual.

Error message "Failed to parse column ITEMS at line 235 in file items.txt":
Automatic updating was broken. Old versions are having problems updating the .exe. If you try to do it anyway, the next time you start a message box will pop displaying the above error and the first group will be missing. To fix this, just redownload it.

Error message "System.IO.InvalidDataException: The magic number in GZip header is not correct. [...]":
Make sure your world file isn't corrupted, and that you are actually opening a valid Minecraft file.

Error message "Can't find Inventory tag":
This shows up if you're trying to edit a level.dat of a multiplayer world, as the inventories get stored in seperate player files (you can open these with INVedit). It rarely happens on new worlds, where no inventory has been saved yet. Pick up a random item ingame and quit.

Again, before asking any questions, also read the tutorial post below.
It usually will help you with your first steps and shows you some more features and how everything works.


You can find the .NET Framework 3.5 here (Windows). May also work with Mono or Wine (Linux + Mac). If you're an unexperienced Mac or Ubuntu user, this is probably not the right tool for you. There are a few unofficial tutorials on how to do it, but I really suggest using a different tool or mod.