JavaScript error when test randomised

Hi, I am publishing a course with a test section in it. If I set this test to pull 15 questions randomly from 30, publish the course to HTML and then run it from index.html in IE7 it won't progress past the screen that displays "Loading Course Title Please Wait...".There is a JavaScript notification which is basically:Line 396Char 9Access is Deniedtitlemgr.htmlThis does not occur when using IE6 although it may be something to do with the settings rather than the version. I have tried enabling pretty much everything I can find in the IE7 settings without success.This occurs when running the course from a network location or from my local drive. It doesn't happen when the test is not set to random. I have tried publishing with or without the Title Manager but this makes no difference.Interestingly this error doesn't occur when I publish the course to SCORM 1.2 and launch it from an LMS.I am using Lectora Enterprise Edition 2006 SP5 (4308)Any help as to why this is happening and how I can fix it would be appreciated.thanks Nick