Took me a bit as I have never run into a permissions issue.  Would someone like to add the sudo command to the Linux Wiki?  I did not see anything there.  Using n0cl as an example username.

 sudo adduser n0cl dialout
[sudo] password for user: 
Adding user n0cl to group dialout
Done.

<< Restart done here to ensure new group picked up >>

pax> id -Gn
pax dialout cdrom floppy audio dip video plugdev netdev bluetooth scanner

REF this site
http://stackoverflow.com/questions/9839988/dev-ttys0-does-not-open-in-ubuntu-12-04-beta

Still having issues writing to the FT-60 after a good read.  I'll buy a USB cable soon and try this once more.  Any steps I'm missing please let me know.  The cable checks good on a meter and if it reads the radio it should write in theory.  Doing the same thing now in Windows and Xubuntu. I will say the Linux version does not yell out an error it just does not work.
Ronny
K4RJJ