RadEditor 2007 for ASP.Net
does neither IE8, nor IE9 which were released later. If you experience any problems in IE8 or IE9, you can put the following meta tag
<meta http-equiv="X-UA-Compatible" content="IE=7" />
in the head of your page and it will be rendered in IE7 mode in the newer IE versions, which should fix the problem.
However, the recommended approach is to upgrade to the new RadEditor for ASP.NET AJAX
, which is more stable, provides support for the latest browsers versions and a lot of new features and bug fixes. Migration instructions are available in this help article: Migration from RadEditor Classic to RadEditor for ASP.NET AJAX
the Telerik team