Thanks! I've tried a number of things (re-installing php-gd, checking to see if I have to install graphics extensions via pear or pecl, looking through the code for the place where the resize happens - can't find that one, actually). No progress. I hope you have better luck. I'm assuming it's just some missing dependency but there are no error messages and I've looked over the INSTALL guide several times to try to find the missing package(s)...