MP freeze on startup, fonts causing problem?

Hello, sorry to burst right into the forum with a question but im having some difficulty MP freezing on startup. Running windows 7 32 bit, current direct x, current video driver, current .net, anyone know what this could be? im sure its something im doing but cant figure it out, used multiwii before, first time trying the ardupilot software and trying to get familiar with it

please install font arial narrow onto your pc.

ok thanks for the advice and answering my dumb question, apparently arial narrow regular does not come on windows 7, would have to buy MS office or Word to get it, or $29.99 from fonts.com, no free downloads anywhere