Embed SWF and LZM compression

Hi everyone,

I encounter some troubles with embedded swf and LZMA compression. Below is what I'm currently experiencing :

1) I have my main swf app that embeds another swf file via the [Embed()] metadata tag.

2) I compile it (Flex 4.6 - mxmlc -compiler.strict -compiler.optimize -static-link-runtime-shared-libraries=true -swf-version=13 -target-player=10.2)

3) And then I compress the final swf with the little tool available here : http://blog.kaourantin.net/?p=124

So far everything's going well. I load it through swfobject or directly with <object/embed> BUT sometimes (at the runtime), Flash Player refuses to play it : right-click > "Movie not loaded...". The bug is intermittent and not always reproducible.

Am I the lonely one ? Any help or suggestion are welcome.