I've encountered a problem when Dynamic Drop Downs, Product InfoMultiple Attribute Display Plugin is set as 'multiple_dropdowns'.

To rule out compatibility issues with other installed modules I've tested this on a clean installation of Zen Cart 1.5.6c and the latest version of SBA from GitHub, connected to the original site database.

When viewing a product that has two attributes, only the first attribute is shown as two separate drop downs. The label shown in both instances is that of the first attribute.

If I change admin settings to either sequenced_dropdowns or sba_sequenced_dropdowns it correctly displays the two attributes.