Can't mount 64 GB SDXC
just sudo apt-get install exfat-fuse exfat-utils
on >= 13.04 it's already there
NOTE: do not install fuse-exfat
with those ... that's a source of a package conflict
I received the same error using linux mint and followed the directions on this website.
http://blog.drastudios.com/2013/04/add-exfat-support-to-ubuntu.html
Basically, I downloaded and installed the .deb.
I did see errors but exfat now mounts fine and I can read/write to the 64gb micro.