ATTiny85 programming error

Hi everyone,
I'm having a bit of trouble with programming an ATTiny85 using an Arduino Uno. I've previously been able to program them quite easily using the method shown here; http://highlowtech.org/?p=1695 I've tried using both a homemade programming shield and wiring a breadboard, but I get the same error each time;

avrdude: Yikes! Invalid device signature.
Double check connections and try again, or use -F to override
this check.

I don't know what this means or how to fix it. I know my wiring is good, the breadboard is at least quadruple checked and I have used the shield many many times before. Any suggestions or ideas?
~Josh

Make sure the right board is selected in the boards menu.

I have it set to Attiny85 and have tried both 1Mhz and 8Mhz internal oscillator, both of which I've been able to use in the past.

The wrong board is my usual way to fail to upload a sketch. That's all I got.

Well thanks for the suggestion :slight_smile: