Looks like iconv is going to be required. I didn't realize how extensively Zend Framework uses it. Additionally, without it, imports could have more errors.
It's on by default in PHP 5, so you either need to manually disable it or use a package that disables it. In the latter case, you probably have a package that can add it.
If you are unable to get iconv installed on your server and can't install the software, contact us and we'll see what we can do.