I have a Toshiba 1TB Canvio 3.0 Portable Hard Drive. I wonder if there is anyone else out there that has one of these or something similar and is having difficulties making it work with their MacbookPro. Mine came with some wonky driver called "Tuxera" that allows one to edit documents, etc. directly from the external HDD instead of having to edit on the computer and drag back onto it when finished. By default it is read-only, but the Tuxera driver thing is supposed to remedy that problem. It works... temporarily. I restart the computer and the following happens after each install and attempt: I edit a document and save once. It's fine. I save one more time and it freaks out, telling me that the document is not in its original location (so it prompts me to locate it.) I then attempt to find the file back on the HDD, but when I click on the HDD on the left side of the prompt, the icon for it turns into a folder with a red cancel-sign on the top left of it. This is made worse when I double-click on the HDD on the desktop after the mess ensues, turning that icon as well into the "canceled folder," afterward displaying a message that reads something like "You do not have the proper permissions to access this folder."