I'm having a hard time making memory sticks, and any other usb plug in memories working with my ubuntu. Not sure what information will help but here is the error message.
Error mounting: mount exited with exit code 1: helper failed with:
mount: wrong fs type, bad option, bad superblock on /dev/sdc1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
Im not super comfortable with ubuntu yet, but I've enjoyed it thus far.