Sunshine Photo Cart 1.6.4 has just been released. It is a maintenance release with various fixes and adjustments. It is fully compatible with WordPress 3.8, so update that as well while you're at it!
Full changelog:
= 1.6.4 =
* Fix - Issues when image not set to use lightbox but add to cart link is
* Fix - Remove error message on Sunshine dashboard when no recently logged in users
* Fix - When package added to cart, can only add image to package if it matches the price level of the package
* Fix - Price for entire gallery downloads not available in some cases
* Add - Use the before/after HTML in custom theme again
* Fix - Setting up newsletter integration was a bit confusing in regards to selecting which list
* Fix - Packages was not querying for all available packages
* Fix - Hide the action menu for galleries that require a password to prevent sharing, free downloads, packages link, etc
* Fix - Rename individual file names that have special characters
* Add - Add new capability "sunshine_manage_options" which can be assigned to custom user roles and allow Sunshine to be shown/hidden
* Fix - PHP error when using credit system
* Fix - Calculate taxes after discounts/credits are applied