usb stick fails to mount - due to fstab entry

I have just installed ubuntu hardy. when i plug in a USB drive i get the following error.

"Cannot mount volume.
Invalid mount option when attempting to mount the volume 'Tygier-USB'."

dmesg contains
[ 362.353514] usb 4-4: USB disconnect, address 3
[ 366.187739] usb 4-4: new high speed USB device using ehci_hcd and address 4
[ 366.325137] usb 4-4: configuration #1 chosen from 1 choice
[ 366.344867] scsi3 : SCSI emulation for USB Mass Storage devices
[ 366.352398] usb-storage: device found at 4
[ 366.352408] usb-storage: waiting for device to settle before scanning
[ 371.595037] usb-storage: device scan complete
[ 371.596913] scsi 3:0:0:0: Direct-Access Freecom DataBar USB2.0 1100 PQ: 0 ANSI: 0 CCS
[ 371.600497] sd 3:0:0:0: [sdb] 15858688 512-byte hardware sectors (8120 MB)
[ 371.601986] sd 3:0:0:0: [sdb] Write Protect is off
[ 371.601997] sd 3:0:0:0: [sdb] Mode Sense: 43 00 00 00
[ 371.602004] sd 3:0:0:0: [sdb] Assuming drive cache: write through
[ 371.605856] sd 3:0:0:0: [sdb] 15858688 512-byte hardware sectors (8120 MB)
[ 371.606856] sd 3:0:0:0: [sdb] Write Protect is off
[ 371.606866] sd 3:0:0:0: [sdb] Mode Sense: 43 00 00 00
[ 371.606872] sd 3:0:0:0: [sdb] Assuming drive cache: write through
[ 371.606882] sdb: sdb1
[ 371.701446] sd 3:0:0:0: [sdb] Attached SCSI removable disk
[ 371.701549] sd 3:0:0:0: Attached scsi generic sg1 type 0
[ 159.796624] UDF-fs: No partition found (1)
[ 372.904588] ISOFS: Unable to identify CD-ROM format.

i think is probably because my fstab contains the entry
/dev/sdb1 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0
if i remove this line then the usb stick auto mounts

and i think this is because i installed from a usbstick, made using isotostick.sh from https://help.ubuntu.com/community/Installation/FromUSBStick