the problem is, FlashFXP uses alway the Standardproxy
but i would that when I start FlashFXP from the Internet Explorer FlashFXP uses for external addresses the proxy and for internal (LAN) he hasn't to use one.
In the Preferences you can select "No proxy needed" as default and all sites will use that as default, for sites that need a proxy you can manually select another proxy profile for them via the site manager.