VFAT error: "mount_point cannot contain the following characters: newline, G_DIR_SEPARATOR (usually /)"

I am the admin of my pc.

_After_ installing hardy I added a SATA HD with several partitions. I assume that is why those volumes are not automounted. Normally I would add them via fstab, but the permissions system in 8.04 showed me some option under 'Properties > Volume' which I thought would take care of this for me. So I added some settings which turned out to be a problem (volume is vfat):

Cannot mount volume.
Unable to mount the volume 'STORAGE1'.
Details
mount_point cannot contain the following characters: newline, G_DIR_SEPARATOR (usually /)
[ OK ]

I looked in /etc/fstab and it doesn't look like anythings been changed - but I haven't been able to solve this mess by editing fstab, I just get told that

My two attempts (now commented out) so far are:
# /dev/sdb1 /media/storage1 vfat defaults,umask=0777 0 1
# /dev/sdb1 /media/storage1 vfat defaults,utf8,umask=007,gid=46 0 1

these both result in the error: "You are not privileged to mount the volume 'STORAGE1'." (Shouldn't the new permissions system prompt me for a password here?)

So... where are these settings which I've messed up actually stored if it's not in /etc/fstab? and how to do change them or reset them? I just want the drive mounted automatically... the settings above usually give me.