Art,
Not gonna lie, that was a bit of a curveball! Can you provide a screenshot of the dialog box you get? Another thing I can recommend is to go into the Registry Editor (Windows key + R > enter: regedit.msc) and navigate to the following path: HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
Be sure SuppressScriptDebuggerDialog is set to 1, Disable Script Debugger and DisableScriptDebuggerIE are set to: yes
Keep me posted.