id summary reporter owner description type status priority milestone component version resolution keywords cc 353 ASP.net: Editor in ModalPopupExtender throws error in Firefox BenHill "I am using the ModalPopupExtender from the new AJAX Toolbox Controls. 1. Create a custom control that adds FCKEditor 2. Add that control to an asp panel 3. Assign that panel to the PopupControlID property of the ModalPopupExtender 4. Assign a button to load the MPE 5. Fire up the app - click on the the button to load the Editor This creates the following error in javascript - the editor isn't editable unless you switch to source mode and back: uncaught exception: [Exception... ""Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIDOMNSHTMLDocument.execCommand]"" nsresult: ""0x80004005 (NS_ERROR_FAILURE)"" location: ""JS frame :: http://localhost/MyApp/script/fckeditor/editor/js/fckeditorcode_gecko.js :: anonymous :: line 31"" data: no]" Bug closed Normal General FCKeditor 2.4.2 invalid Pending