Can the editor auto-install in IE 7?
Yes, if you install Security Update MS07-057 (KB939653) from Windows Update. Or you can use the following workaround:
Your scripts that generate the <object> element can check the HTTP User-Agent header for the string "MSIE 7". If present, then generate:
<object classid="clsid:0EED7206-1661-11D7-84A3-00606744831D" ...
instead of:
<object type="application/x-xstandard" ...
For ASP.NET developers, the lastest ASP.NET control will automatically generate the appropriate <object> element in order to support the IE 7 auto-install workaround.