Index: /trunk/uploadr/MacUploadr.app/Contents/Resources/chrome/content/uploadr/meta.js
===================================================================
--- /trunk/uploadr/MacUploadr.app/Contents/Resources/chrome/content/uploadr/meta.js (revision 462)
+++ /trunk/uploadr/MacUploadr.app/Contents/Resources/chrome/content/uploadr/meta.js (revision 494)
@@ -456,4 +456,8 @@
 			var desc = result.desc;
 			if (!name) { return; }
+			var currentSets = meta.sets.map(function(x) {return (x ? x.title : "");});
+			if (currentSets.indexOf(name) != -1) {
+			    return;
+			}
 			meta.sets.push({
 				title: name, // Sorry