HELLPP!

I recently got myself a Asus Transformer Pad running android 4.1 and downloaded the two Ubuntu One Android Apps, both are installed but when i go to log in it comes up with "Unfortunately, Ubuntu One Files has stopped." then shuts the app down.

Is this a common problem, and any suggestions on how to fix this would be really appreciated. I'v tried uninstalling an reinstalling but this doesn't seem to fix it.

thanks