Don't worry about linking them externally. Optimise your module swf against the main swf, and it'll strip out any classes which will have already been loaded, while leaving the ones that the module requires.
Note that you have to be very careful of your application domains when doing this, loading the module into a different domain will result in class not found Errors. Gk. From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of alpdhuez Sent: 25 January 2010 06:45 To: flexcoders@yahoogroups.com Subject: [flexcoders] Smallest module file sizes possible... Hi, I am trying to get my swc/swf file sizes to be as small as possible. Currently my site has a main swf that acts as the shell of navigation & loads modules for each page. I have switched the main and module SWFs to use RSLs, this has helped. Now I am looking at the size of swc libraries that are included in the main and module SWFS. Ideally I would like to make the module SWFs as small as possible so that the page loading is fast. We have a nice PreLoader, so we don't mind making the users wait for the login if the main.swf is fatter. My question is, if I used -compiler.include-libraries for the common swc library references in the main swf, then used -compiler.external-library-path in the module swfs, should this work? So I've tried it. The main.swf goes from ~800kb to 1.6kb is larger, and the module SWFs are about abou ~100kb but I get class not found errors when the module.swf's load. Is this even possible? Should I debug this more or is there a better setup? thanks in advanced. -al