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Solution 1. Disable the Script Debugging on Internet Explorer. Here go the step by step instruction:
i. Open Internet Explorer.
ii. Click on Tools, then on Internet Options.
iii. Click on the Advanced tab.
iv. Look for the “Disable script debugging” line and put a check mark in the box.
Solution 3. Disable iGoogle’s TVGuide.com widget when using Internet Explorer.
It seem that a number of people reported the error when visiting iGoogle site with TVGuide.com’s widget. So try to disable it and the pop up message box will be gone.
Let us know if you have encountered any other question, we will try to get it fix for you.