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Reporting Issues

Before submitting an issue, read Reporting Issues and be sure to include all of the required info in your description:

  • Steps to Reproduce - Step by step, tell us exactly which buttons to click on, text to enter, and keys to press that lead you to discover the problem.
  • MCEdit Version Number - Found in the title bar of the main window.
  • Minecraft Version Number - You should already know how to find this. Also include a list of the mods you are using.
  • Operating System Version - At the very least, say whether you are on Windows, Mac, or Linux. To get a more exact version (e.g. "Windows Vista SP1 64-bit", "Mac OS X 10.6.4"):

    • Windows: click Start, then right-click Computer and choose "Properties".
    • Mac OS X: Choose "About This Mac" from the Apple menu.
    • Linux: See your distro's documentation to find out how to get the version number.
    • An animal is not a version number.

  • Error log - If MCEdit tells you it had an error, there will be vital information inside the console window and/or error log file. On Windows, this is the file mcedit.log inside the MCEdit-<version>-<platform> folder. Use pastebin or gist for logs longer than a dozen lines. On Mac OS X, error info can be copied from the Console utility. (mcedit.log is also present on OS X, though it's buried deep inside the application bundle.) On Linux, the error log will be shown on the terminal you started MCEdit from.

The issue tracker is the preferred channel for bug reports, features requests and submitting pull requests, but please respect the following restrictions:

  • Please do not use the issue tracker for personal support requests (use the thread on the Minecraft forums or the official MCEdit forums (not yet available)). Asking for help is a personal support request.

Bug reports

A bug is a demonstrable problem when using MCEdit itself, or when loading a MCEdit-modified world into a vanilla Minecraft game. Modified versions of Minecraft are not officially supported. Good bug reports are extremely helpful - thank you!

Guidelines for bug reports:

  1. Use the GitHub issue search — check if the issue has already been reported. The search box is right next to the "New Issue" button.

  2. Check if the issue has been fixed — try to reproduce it using the latest development builds from

A good bug report shouldn't leave others needing to chase you up for more information. Please try to be as detailed as possible in your report. What steps will reproduce the issue? What OS and Minecraft versions experience the problem? What would you expect to be the outcome? If you use mods, have you tried a vanilla Minecraft install to confirm the problem is not mod-related? All these details will help people to fix any potential bugs.


Short and descriptive example bug report title

Minecraft version(s): MCEdit version(s): Operating system(s): Mods installed:

A summary of the issue. If suitable, include the steps required to reproduce the bug.

  1. This is the first step
  2. This is the second step
  3. Further steps, etc.

Any other information you want to share that is relevant to the issue being reported. This might include the lines of code that you have identified as causing the bug, and potential solutions (and your opinions on their merits).

Feature requests

Feature requests are welcome. But take a moment to find out whether your idea fits with the scope and aims of the project. It's up to you to make a strong case to convince the project's developers of the merits of this feature. Please provide as much detail and context as possible.