Dynamic Loading of External Java Libraries

Is there a way to force Screen-Scraper, or at least scripts in SS to re-load the newest versions of library files in lib/ext without having to reboot the screen-scraper server? Obviously doing this in the middle of a scraping session would be a bad idea, but in a large production environment with quite a number of scraping sessions potentially running simultaneously, it would be very nice to force new instances of scripts to use new versions of libraries. Ideally I'd like to utilize the beanshell "reloadClasses()" function at the start of every scraping session, but I have not been able to get this to work yet.