Just a quick FYI that we just enabled quota enforcement. So if you are over your quota you will not be able to upload any new assets from your computer unless you upgrade your account (<a href="https://app.roll20.net/account/supporter" rel="nofollow">https://app.roll20.net/account/supporter</a>) or delete items from Your Library that you may no longer be using. You will receive a message if you try to upload an asset and you are over your quota telling you basically the same thing.
Let us know if you run into any problems (e.g. it's telling you you're over quota when you're not), but it should be fairly well-tested at this point.
Thanks!