USBtinyISP not recognised by computer

[scruffygecko]

Hi, I was hoping I could get some help getting my USBtinyISP to work;
I am building it from a kit with the intention of using it to program a spokepov.

I have tried to connect via USB to the spokepov app on 2 different mac pro machines running windows 7 and osx snow leopard.
This is the first time i have tried to get it to work, it has never functioned. one time the red light lit up when i plugged it in, one time the green light lit up, but most of the time neither come on when i plug it in.
When I select 'USB port' in the spokepov app and test the connection, i get the message "failed to open the port".

Attached are some photos of the board.

Thanks!

[scruffygecko]

Okay, turns out the red LED was soldered in backwards. It works fine now.
Thanks anyway!

[adafruit_support_bill]

Good catch! That is hard to see in the photo.