when you purchased the extensions, DW CS6 was not yet released, they where not made to be compatible with DW CS6, since then new extensions have been released that replace the ones you originally purchased.
I see in your order history that you have already upgraded eCart and Design Extender, you just have not upgraded Data Bridge, you will need to purchase the data bridge upgrade and install only those extensions to use them in DW CS 6, otherwise, you can continue the older versions in the previous DW Version that you have.