computer analysis not available?

I've played a lot of bullet games today, and find that I can not analyze half of them. Is there any reason for this? I have tried on both up to date IE and chromes browsers (and android). Am I missing something?

For example, this game: I hit analyze button, and nothing happens.

There may be a limit for the number of games you can request computer analysis over a short period of time. Try again later.