Board Thread:Support Requests - Designing Your Wiki/@comment-4060385-20131123220816/@comment-1330470-20131125001205

My understanding is that there are two caches when browsing Wikia: your cache on your browser, and Wikia's cache which you can't really clear. You might upload the image via the link on the file page, that is, NOT via AchievementsCustomize, and then just wait a few hours.