Please can you help me? Freetronics leostick vs the Arduino Pro mini

It'd help a lot of you provided a link to the sketch you're wanting to run, or paste it into a post. If there's nothing unusual in it, it may be as simple as selecting the correct board type before clicking "upload" and it'll all just work. Without knowing what you're trying to run, though, it's hard to provide specific assistance. It sounds like you already have the board profile working OK if you've uploaded Blink to the LeoStick, so the rest should be pretty easy.

Jon