diff --git a/chrome/content/zotero/xpcom/collectionTreeView.js b/chrome/content/zotero/xpcom/collectionTreeView.js
index c8826a7bc..776c12c6f 100644
--- a/chrome/content/zotero/xpcom/collectionTreeView.js
+++ b/chrome/content/zotero/xpcom/collectionTreeView.js
@@ -106,7 +106,9 @@ Zotero.CollectionTreeView.prototype.refresh = function()
 		var unfiledLibraries = Zotero.Prefs.get('unfiledLibraries').split(',');
 	}
 	catch (e) {
-		unfiledLibraries = [];
+		// Add to personal library by default
+		Zotero.Prefs.set('unfiledLibraries', '0');
+		unfiledLibraries = ['0'];
 	}
 	
 	var self = this;
diff --git a/chrome/content/zotero/xpcom/zotero.js b/chrome/content/zotero/xpcom/zotero.js
index 97a34b909..dd4c201f7 100644
--- a/chrome/content/zotero/xpcom/zotero.js
+++ b/chrome/content/zotero/xpcom/zotero.js
@@ -1604,14 +1604,14 @@ Zotero.Prefs = new function(){
 						Zotero.debug("Creating boolean pref '" + pref + "'");
 						return this.prefBranch.setBoolPref(pref, value);
 					}
-					if (parseInt(value) == value) {
-						Zotero.debug("Creating integer pref '" + pref + "'");
-						return this.prefBranch.setIntPref(pref, value);
-					}
 					if (typeof value == 'string') {
 						Zotero.debug("Creating string pref '" + pref + "'");
 						return this.prefBranch.setCharPref(pref, value);
 					}
+					if (parseInt(value) == value) {
+						Zotero.debug("Creating integer pref '" + pref + "'");
+						return this.prefBranch.setIntPref(pref, value);
+					}
 					throw ("Invalid preference value '" + value + "' for pref '" + pref + "'");
 			}
 		}