Hi Josh, we're looking into it. Or rather Dorian (SHOWstudio's Chief Technical Officer) will be when he returns from his holidays.

Will a JPEG do the trick in the meantime? We're dying to see whatever it is you're looking to share with us.

Josh, Dorian's been under the bonnet and, not only fixed it, but also upgraded our PNG upload functionality. You can now add PNG image files to your posts even with transparent backgrounds. Think of the graphic possibilities!