Please do keep in mind that when developing Add-Ons that Linux-based operating systems have filepaths that are case-sensitive. Essentially, this means that the following filepaths are treated differently: /media/foo /media/Foo Thus, if you're referencing a file with "foo", but it's actually in "Foo", the user will encounter errors. Additionally, remember that KSP.IO uses the lowercase name of your class to access files, so if you're distributing a folder with assets in and it is named in a format such as CamelCase, then KSP.IO will simply create a new folder and pay no attention to the other one. This is easy to get around by either manually creating the lowercase folder or letting KSP.IO create it and then packaging it all. Thanks!