Many thanks Tony, when I tried the Beta flight before I sent out the help message I got a message saying" not flashed for Beta flight" as the day went by and a lot of you tubing I downloaded Clean flight to give this a go. Must have done something right because when I plugged the drone in, I got no messages and was able to open up the contents.Did some searching and it seems you need to do a bit more with mac than you do with windows. I found the below, hope it helps. I don't own a mac so can't help.
- Using USB to connect to the Naze32 requires the installation of the SiLabs CP2102 VCP Drivers. The drivers are available for download directly from the SiLabs Website
- Force the serial connection to be recognized by running the following line at the command terminal: sudo ln -s /dev/tty.SLAB_USBtoUART /dev/tty.usbserial
- Fire up Cleanflight!