Have had this error, exactly as described, on and off since a new installation of Xubuntu 14.04 (beta). Thought it might go away on official release but has remained.
Grub is installed on /dev/sda
Was running Ubuntu 12.04 from a different partition on the same disk but have now deleted it. Did an update grub to get rid of the 12.04 boot option but the malformed file issue remained.
Tried what luvr(luc-vanrompaey) did in the above post, substituting /dev/sda.
Appears to have worked for the time being at least.
Have had this error, exactly as described, on and off since a new installation of Xubuntu 14.04 (beta). Thought it might go away on official release but has remained.
Grub is installed on /dev/sda
Was running Ubuntu 12.04 from a different partition on the same disk but have now deleted it. Did an update grub to get rid of the 12.04 boot option but the malformed file issue remained.
Tried what luvr(luc- vanrompaey) did in the above post, substituting /dev/sda.
Appears to have worked for the time being at least.