Hi!
We are trying to find out what that issue is. If it happens to you again, and you are using chrome or any similar browser, it would help if you can open the console and screenshot the exception in red that will be there (It will be a set of files and line numbers). That's all we need to fix it, since we can not get the bug on our own computer for now.
Yes, there is. However, seems to be something is a bit... umm... muted at the moment. :) Looking into it.