Multiple Product Images in MarketPress

Im wondering if there is a reason i cannot use multiple product images with marketpress lite. A gallery or multiple featured images would be great, but im just talking about inserting them directly into the product details post. I can insert images fine into other posts, but when trying to do so with a product, after I click “insert” from the media library, the media lightbox window just turns white and gets stuck like that. Is this intentional? a bug? or something i need to upgrade to Pro for?

Thanks.