Having trouble getting this to work.

getbootstate: Invalid selection
Choose bootup option:
2) MMC
9) Start a shell.

I'm guessing the error is up further when I get:
EXT3-fs: Unrecognized mount option "rpsize=1024" or missing value
mount: mounting /dev/mmcblk0p2 on /mnt/new_root failed: Invalid Argument
Command exited with non-zero status 255

I'm pretty sure I partitioned it correctly, followed both the guide on talk and on the nitdroid wiki. I originally tried with eclair and zimage0.0.3, but moved to zimage0.4 and Froyo and still getting same error. I'm certain my android.ext.item file is correct, not only have I rewritten twice, I also copied it straight from the wiki. Finally tried with mmcblk0 instead of {EXT_CARD} to the same effect. Help?

Also of note, further up on bootscreen its showing
mmcblk0: mmc0: (hexi crap) 1.89 GiB
mmcblk0: p1 p2

So the card is recognized and its finding the partition. I'm completely lost as to what Unrecognized mount option error means though.

EDIT: While I'm at it... any reason why a script file can't be made that'll auto format the microSD card in the N900 with Maemo (through xterm)