While using wysiwug editor to insert the media image , its givs an error in browser.js thus resulting not uploading the images.
This can be overcome by comment the line below in browser.js on line number staring form 228
getTargetElement: function() { if (typeof(tinyMCE) != 'undefined' && tinyMCE.get(this.targetElementId)) { if ((opener = this.getMediaBrowserOpener())) { var targetElementId = tinyMceEditors.get(this.targetElementId).getMediaBrowserTargetElementId(); return opener.document.getElementById(targetElementId); } else { return null; } } else { return document.getElementById(this.targetElementId); } },
Replace the above line withe the line below
getTargetElement: function() { if (typeof(tinyMCE) != 'undefined' && tinyMCE.get(this.targetElementId)) { if ((notOpener = this.getMediaBrowserOpener())) { var targetElementId = tinyMceEditors.get(this.targetElementId).getMediaBrowserTargetElementId(); return notOpener.document.getElementById(targetElementId); } else { return null; } } else { return document.getElementById(this.targetElementId); } },
After changing the above line uploading the image works in wysiwug editor
Source : http://www.fortwaynewebdevelopment.com/magento-admin-editor-opener-null-issue-inserting-imagesfiles/