It's a compatibility bug between the website and the browser. Because browsers are handling communication with websites differently it is difficult to make certain function be perfectly compatible with all. It's a timing problem between browser and the website. We are working on a solution for this though.
If you get the this error: "No token provided to match against" don't be alarmed you work is not lost. All you have to do is click submit again. On the second time it should work.
If that won't solve the problem and you still get the same error when you are trying to post your blog, please open a Support Ticket and we will help you.