Marketpress not showing grid properly

I'm setting up Marketpress on my theme (Drophlio from Themeforest) and the default is showing all products in one list on the page and will not show a sidebar for widgets.

When I changed it to use GridMarket, it will show the items on a grid, but it mashes them together so the second product image is right underneath the price and 'add to cart' button on the first image.

Can anyone give me some advice on where to go so I can play with the settings and figure out why these aren't working properly?