I was organizing my asset library in a game and suddenly most of the folders I had been reorganizing disappeared. I am still able to find the tokens using the search bar but the folders do not display. I cleared my cache and tried on other computers/browsers but the problem persists. In researching this problem I found that others had similar issues and there was no fix they were able to accomplish. They all had to have Roll20 staff rebuild their work after the error. I can say this is fairly frustrating. I would also like to say that an out of game library manager (like this but better: <a href="https://marketplace.roll20.net/library" rel="nofollow">https://marketplace.roll20.net/library</a>) would be really nice so that I don't have to go into my game to just deal with tokens.