I had report that some users are having script errors on a video page. The error message contains something like “An error has occurred in the script on this page. Line: 53, Char: 3, Error: Object required, Code: 0, URL: — yada yada yada”. The error message pops up when the user clicks the browser’s exit button to close the page. It turned out that the page is hosting a flv-based video using an earlier version of flowplayer which uses javascript to dynamically inserting an object or embed tag for a flash video player.

The same page plays well on my computer, and has problems on Laura’s and some users’. Some research on Google, ironically, pointed the issue to a Google Bar. And I was able to confirm that turning off the Google bar and relaunching the IE browser will fix the problem; and turning on the Google bar will bring back the problem after a browser restart.

On Laura’s machine, MS Script Debugger does not seem to work: it does not kick in when the script error occurs. Maybe the script debugger does not want to work when the browser is being closed down.

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