I should definitely start looking over the forums more frequently!
First of all – if you ever have a question concerning my theme (Purity), please use it’s Comments Section or just drop me a private message. That’s the best and fastest (I reply usually within few hours) way of getting support.
As for your issue Tapupartforpres, TimThumb does not support images with the tilda ”~” character within their URL. Anyway, TimThumb is some really old stuff and I’m going to replace it completely very soon so stay tuned!