I only learned about roll20.net today* and tried to start a campaign. At first everything went fine and I closed and joined the Campaign a few times, but than I invited two friends of mine to join as Players and now the Campaign won't launch.
It seems, that it stuck at loading the page, I only get a black screen with the loading-texts and the browser don't "loads on".
*I would have supported the kickstarter-project, if I had heard of it before. Wonderful Idea! I hope it will run without bugs soon! :)