In these cases you are adviced to first place the file on a disk image (using Disk Copy, or Toast etc.), then compress the disk image (convert to compressed) and then split the (compressed) disk image file with Split&Concat. If you then concat the split parts of the disk image file, the resulting file will contain an exact copy of the original file.The compression stage may help with the resource fork issue if split doesn't handle those properly in 10.4 (I can't remember when those sorts of utilities were made resource fork-aware). If there's still problems, I'd double check you're joining the files in the right order.
posted by drea at 4:10 AM on January 21, 2008