Do you have a Space in your Drive name like "S10 HDD" or something like that? Spaces in the name of your boot-drive are a bad idea in OS X. They will break a lot of (I think poor written) Scripts depending on their usage of Parameters. e.g. if you have a Variable BOOTDRIVE an try something like /Volumes/${BOOTDRIVE}/usr/bin/open ... this will result in /Volumes/S10 not found inside a UNiX shell.
If this is the case for you, rename your Drive using Finder and try again.
cu Harald
