thanks for getting back so soon. you're right, 246 mp. i was going to upload a screen shot but i'll just type it in... please note: i upgraded to the pro version so i thought this wouldn't happen

.
anyway, here are my settings...
Mac OSX 10.6.2
2.33 GHz Intel Core 2 Duo
3 GB 533 Mhz Ram
original image: 53x29 inches, 400 ppi.
don't believe i'm using a mask file. what's that for anyway?
tiles: 10,000
same tile up to 50x
tile variants (only original selected)
error: "out of memory while allocating an image made of 21200x1160 pixels."
It says it's processed 0%.
i'm in a jam here: this is due tomorrow am and i've been fiddling with this for a couple of days now

thank you...