So tonight there's another problem with the cloud provider used for storing images. That means you can't upload new map/minis or use old ones. You can only use those you've used recently that will be in your local cache.
Sorry for the service interruption again. I'm hoping it'll all be sorted in about 3 hours. If it's not going by then, it'll likely be the next day.
Check back here for updates, or see 3DVTT on twitter.