Hey, because I'm confronted alot with reports that could be more useful and contain more information for faster bug-fixing or improvements I decided to make this quick guide. Make sure to improve this post by posting feedback in the comments This is kind of a step-by-step guide to collect information about the issue you're having. 1 Figure out which mod is causing the issue The most important information is to actually find the origin of the issue. Which mod causes the bug? Maybe it is a combination of two mods at the same time, but that's rather rare. 2 Update As easy as it sounds, check for updates and make sure to use the latest version of the mod you're using and make sure the bug still exists in the newest version, incase you are not up-to-date. Most issues are resolved this way Furthermore you can google if anyone else had this issue before and maybe has a workaround for it already. Additionally most mods require Java 8, make sure to have a Java 1.8 version installed and that you are using this. 3 Is the mod running / installed correctly? Another important aspect is, if the mod is actually registered. If you're using Forge click "Mods List" in the main menu. 4 Is it consistent? Does this bug only happen in certain situations? Or does it just happen "randomly"? 5 What happens and what is supposed to happen? Most of the time I receive reports like "it's not working". This does not help very much. What is not working? How do you know it's not working? What do you expect to happen? 6 Grabbing Log Files Navigate to your MC profile directory you're using. (Click "Edit Profile" and check "Game Directory".) By default this is %appdata%/.minecraft. Open the "logs" folder. If you have not launched Minecraft another time after the bug happened, grab latest.log and if you're using Forge fml-client-latest.log too and upload them to a site like pastebin.com and provide those in the report. 7 Reporting in the right place One last important note: Try to report the bug as close to the download link as possible. What I mean with that is: Report the bug directly on the website where you download the mod from. If that's not possible report it on the website that links to the download link (e.g. a forums post). Or report it on a YouTube video from the publisher that links to it. You get the point! If you include log files you can also use some sort of private message to avoid publishing information that those logs contain.