I have an SD card that I use, but I can't copy folders with other folders/files inside, it gives me a message saying that the operation couldn't be completed because "Folder" can't be read or written. It also says error code -36. It works fine when it's formatted as Mac OS Extended, but not when it's on MS DOS Fat16. I need it to be Fat16 so formatting it is not an option. Right now I'm archiving folders, putting them into the SD and unarchiving them, since it's all I can do besides putting each file in one at a time.