A friend is now using an apple after years on windows. So we had a pen stick plugged in and viewed some files from the windows machine all ok. She had another stick so plugged it in and browsed to some folders within folders but was unable to open a .doc file as this is all thats on the drive. It came up and said about unsupported character in name of file or file was in use. So went back to desktop and noticed both drives where "untitled". Ejected one drive then was able to open the .doc files. Plugged other drive back in and again unable to open the file. I renamed one drive. Is this normal? All my sticks are named so not come across this myself. I changed name and issue gone but they have lots sticks all "untitled". So I told them one drive at a time to save issues.