try chmodding your /images directory in the root... also see if there is a directory /images/comprofiler/ .. you might want to chmod that directory as well.. Also depending upon how you have everything setup you might want your apache account to have perms to it.. chown nobody.noobody images/
Have you checked any of your error logs? maybe it wil return some sort of error.. and i presume since the permissions are fine there is no reason to uninstall / reinstall. what's the url of your site?