If you come across this error message while you are trying to copy a file for example to a SD card, it's because the SD card is formatted to FAT32 and this does not allow single large files to be copied to it.
From disk utility re-format to ExFAT.
If you get message: "could not unmount disk" then select zero out data before formatting. (Be warned, depending on size of your SD card memory, this can take a long time)
Useful table of file systems / formats: http://en.wikipedia.org/wiki/Comparison_of_file_systems
