A problem with mochiads

programming flash
1

I need your help (problem with mochiads)

I keep getting this error

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at MochiAd$/_parseOptions()
at MochiAd$/showPreGameAd()
at MochiAd$/showPreloaderAd()

when i did debug, it seems like that in the function parseoptions
optcopy.clip.loaderInfo is NULL
and therefore i get this exception…

the code that calls the mochi ads is:

        var moch:MochiadMovieClip=new MochiadMovieClip();
        
        MochiAd.showPreloaderAd({clip:moch, id:"my_id", res:"560x455"});

where MochiadMovieClip is just a dynamic movie clip

have any ideas what can cause it?

Thanks