Getting Edimax EW-7811UN 150Mbps Wireless Nano USB Adapter to work?

The Edimax EW-7811UN 150Mbps Wireless Nano USB Adapter is supposed to be fairly easy to get to work with a Raspberry Pi but I am having no luck with the latest image: oem_gateway22oct2013.img.

There appears to be a driver built in but this message is in the system log:

8192cu: disagrees about version of symbol module_layout

Help!!!