Aaron,First off, when we remove the security patch it works fine.Second, the problem arises when we open a child window from the main course and then close it via script we get the error. This mostly means that when we launch a custom feedback box and then use a script to close that child..ie, an action script for onclick, close window.Third, we are publishing with AICC exclusively. The cross domain comment was from one of our LMS programmers who I know monitors this forum so perhaps he can comment further.4th. The LMS is Pathlore version 6 and the LMS and files reside on seperate servers. Prolly why we dont use SCORM. 5th. All the content in the course is on the same server. The popups are feedback windows from exam questions.