IE10 on Windows 7: every new tab or page opens with a script error Unable to get property 'style' of undefined or null reference

Just upgraded from IE9

Since the upgrade every new tab or page generates a script error:

Line: 1

Error: Unable to get property 'style' of undefined or null reference

I have :

reset internet explorer, disabled all addins, run as administrator

Any other ideas?

CarolChi