Explorer error fix..
Right click My Computer, select Explore.
Click on search on the toolbar, then on "Other Search Options".
Click on "search the internet".
Place cursor at top of pane - you may see the 912945 'click to activate or use this control' hover.
Click on customise. Page is stuck on "loading search settings" and any attempt to select a radio button the window throws script errors.
Fix: Run the following command:
regsvr32 /i shdocvw.dll
The first time you try to use the "explore" context menu there may be an extended delay, with the system frozen, before the window opens. Give it a minute or two.
Thanks to Rob A who mentioned he'd been able to fix a problem with his "Search the Internet" feature by registering that file - don't know what his precise problem was, but what the hey, it works :o)