I might be missing something here, but I'm just wanting to check if an asset exists (from a path) before I assign it to something.

For example, I would do something like:

    this.mySprite.setSprite("Path/To/Sprite");

but I'd like to be able to do:

    if(AssetExists("Path/To/Sprite")
        this.mySprite.setSprite("Path/To/Sprite");

You could use a simple try / catch statement like so:

try {
    this.mySprite.setSprite( "Path/To/Sprite" );
} catch( error ) {
    Sup.log( error ); //Something went wrong, most likely the path to the asset doesn't exist
}

Yeah I'm thinking that's what I might have to do, thanks!