000:
Lock byte and Flash memory sizes are different..
I had a bug in my sketches (now corrected) where it thought the 1284 had 256 Kb of memory. Of course, it has 128 Kb of memory. So that is just a bug on my part.
The lock bits aren't that important (well, they are important) but the difference shouldn't affect uploading. I just turned on the bit which lets the sketch read the memory of the bootloader.