in your loaded swf, use:
Thank you very much for your response. Could you please clarify for me where to use, this._lockroot=true; ?
Does it go on the button as well?
I currently have this code,
on the button to start the swf over again.
put it in the first frame of your main timeline so it executes before any references to _root are executed.
Thank you so much, worked like a charm!