Finally made CE to work on my test page. But when using it in my application on Firefox, I get in the JavaScript console:

 

Error: uncaught exception: [Exception... "Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE) [nsISelection.getRangeAt]"  nsresult: "0x80070057 (NS_ERROR_ILLEGAL_VALUE)"  location: "JS frame :: http://localhost/StudyLoftSite/CuteSoft_Client/CuteEditor/CuteEditor_Gecko.js.aspx?settinghash=1052ce9d :: anonymous :: line 13"  data: no]

 

Any idea what is this about?