So, yeah, after testing, I believe that the colon character that duplicity normally tries to use is illegal on FAT partitions. I'll add code to check if we get that error and if so, to try again with the --short-filenames argument to duplicity.
So, yeah, after testing, I believe that the colon character that duplicity normally tries to use is illegal on FAT partitions. I'll add code to check if we get that error and if so, to try again with the --short-filenames argument to duplicity.