Virtualbox Need to change share folder name before i can mount it

HI

I would like to ask about my virtualbox 4.0.4 in my lucyd lynx box

My shared forlder isn't auto mount in my linux guest OS. And everytime i manually mount using command sudo mount -t vboxsf <shared_folder_name> <Guest_location> it throw an error msg "/sbin/mount.vboxsf: mounting failed with error: Invalid argument" and i need to first change the filename of the shared folder before i can mount it manually..

Hope someone can shed a light of my problem..

Thanks in advance

Are you past this: VirtualBox/SharedFolders - Community Help Wiki