How to find the mod responsible for any issue in minecraft.

minecraft issue solving.md

How to find the mod responsible for any issue in minecraft.

1. Check minecraft_dir/crash-reports/ for crash reports. If the issue is a crash, and the game has loaded at least most of the way, this can find the source of the issue very quickly. minecraft-dir is not the actual path, which depends on your OS, and possibly on your install if you chose a custom path. See this help page.
2. Check minecraft_dir/logs/ for logs. Logs usually have lots of stuff in them that is not about the issue, so it may be hard to find the problem with a log, but they can be very helpful.
3. If you post a crash report or log file somewhere to ask for help, please use pastebin/hastebin/gist or any other pastebin-like site. If you are even able to post the whole thing directly to people, it will annoy them if you do so.
4. If there is no crash report or log, or neither have helpful information, use the following steps to find the mods at fault.
5. First remove every mod from your mods folder. Does the issue persist? If so, then it's either an issue with vanilla or the modloader you are using.
6. If the issue did not persist, add back half the mods.
7. Did the error return?
8. If so, remove half of the enabled mods.
9. If not, add back half of the disabled mods that were removed last.
10. Go back to step 7 and repeat until you have one mod that causes the issue.
11. Once you find the mod that gives you the issue, add the rest of the mods back except that mod. Does the issue come back or not?
12. If an issue comes back when adding the rest of the mods, remove the new ones and start from where you left off.
13. Then remove all mods but put in the mods that caused problems. Do the problems come back?
14. If no, add back all the mods and repeat steps 8-11 until you find any mods that bring the issues back, keeping the problem mods from the previous round(s) in the whole time. Editing their filename to make them sort to the top/bottom is an easy way to keep them separated.
15. Repeat step 14 as many times as you'd like, as sometimes issues depend on multiple mods.
16. Now that you have the mods that caused issues, try with all mods except those. If it works as expected, try putting mods back in until the issue happens again, in order of how much you want to use each mod.
17. Finally, report the conflict to all the involved mods. The devs and other players will appreciate this.