There are a couple options you can try. You can try using a different USB cable, as describedhttp://https//communities.intel.com/message/267234here .
As another suggestion you may want to try reading this post , it discusses a similar issue to yours. The issue seems to be that the disk space is full of logs found in /var/log/journald. You can try configuring the journald file and see if it helps.
Sorry for the delay! I finally fixed it deleting the logs here /var/log/journald.
Thanks for your help!!