Some good info but not enough detail.
Copy and paste the specific error and use CODE TAGS to post it ( </> )
Does it need a board specific package installed first ?
It looks also like you need to install FTDI drivers.
They are in the IDE installation folder in a subfolder called DRIVERS.
Also according to the web site you have to be specific about the clock frequency of 8 Mhz when setting it in the IDE before programming.
Setting up boards is not always as plug and play as we would like them.