Backup not possible - application is not responding

I try to get the Vaarainjärvi update but can't get the backup to end, it constantly shows the animation and let's you to choose whether to wait or close it?! I do not use the phone in developer stage, so how to overcome?

Maybe useful for some unusual issues with back-up: I used to include some symlinks in /home/nemo/ to facilitate access to equivalent folders on SD card (Documents, Music, Video etc.) Bad idea, as the back-up utility tries to save internal memory contents PLUS symlinked contents. This results of course in a full internal memory condition, and a back-up failure.

@objectifnul this is not related to the discussed issue, so should not mess with the answers to this question. I converted it to the comment but if you want to propose a change in behavior you are welcome to submit new suggestion. To understand the issue with symlinks you told about, you should describe where you created symlinks, e.g. Gallery backup unit only saves data from ~/Pictures and ~/Videos directories and it tries to follow symlinks too because it is hard to understand user's intentions. It'd be possible to limit some cases but solution should satisfy different users.