apparently it is working with the new 1.5 cards, but as far as I can tell it does not give identical dumps to existing ones (SM64DS was the one I tested, 0.6 is gonna fix the name issue but one can still dump it and get it off the SD with a chkdsk /f ) - the last bit of SM64, outside of the DSFS, is null in my dump... oddly enough.
I dont know if/why there is a limit on the dumps at this point. I will pass the info along though so hopefully it can be fixed in a later menu release.
I'll see what I can do right now about making a padder for you, since most arent interested in having useless space used up on their SD/MMC having them not trimmed when dumped would be... well... I think you get it.
Here ya go, no need to break out the hex editor, I put 32mbit (4MB) to 4Gbit (512MB) so it should be "futur proof" enough, but source is included in case it isnt...