I've been having difficulties with MarketPress and the 404

Hi guys,
I've been having difficulties with MarketPress and the 404 error pages i seem to be getting all the time.

the site i'm testing it on is - bh2.bandhouse.me

i've changed the permalinks structure back and forth between a few different ones in WP and then re-save the market press Store URL slugs. but to no avail.
I can see the single products just fine, but i cannot access the normal products page or the tracking or shopping cart pages.