I had a little trouble with mega learned this thought id like to share with everyone.

Chrome:

Settings
Show advanced settings...
Privacy | Content settings...
Cookies | All cookies and site data...
Type "mega.co.nz" in search field
Delete all local data

Opera 15:

Settings | Privacy and security
Cookies | All cookies and site data...
Type "mega.co.nz" in search field
Delete all local data


Ruzzz's draft: MEGA.co.nz message "Error writing file, is your harddrive almost full? (getFile)" SOLVED (http://ruzzzua.blogspot.com/2013/09/megaconz-message-error-writing-file-is.html)

Thanks and i hope this helped.