The NetBotz version 4.2 Web Client does not run on Internet Explorer 8 or Internet Explorer 9 when displayed in Compatibility View.
Microsoft Internet Explorer version 8.0
Microsoft Internet Explorer version 9.0
NetBotz version 4.2 Web Client
It is a known issue that the NetBotz v4.2 Web Client does not function with the browser set to display websites in Compatibility View.
Change the Compatibility View Settings in the browser.
For more information about Compatibility View, see the following Microsoft article: http://blogs.msdn.com/b/askie/archive/2009/03/23/understanding-compatibility-modes-in-internet-explorer-8.aspx
This issue should be resolved with the release of 4.3