diff --git a/chrome/content/zotero/xpcom/data/relations.js b/chrome/content/zotero/xpcom/data/relations.js
index 323488362..413035e64 100644
--- a/chrome/content/zotero/xpcom/data/relations.js
+++ b/chrome/content/zotero/xpcom/data/relations.js
@@ -229,21 +229,27 @@ Zotero.Relations = new function () {
 		var uris = Zotero.DB.columnQuery(sql, [this.deletedItemPredicate, this.deletedItemPredicate]);
 		if (uris) {
 			var prefix = Zotero.URI.defaultPrefix;
-			Zotero.DB.beginTransaction();
-			for each(var uri in uris) {
-				// Skip URIs that don't begin with the default prefix,
-				// since they don't correspond to local items
-				if (uri.indexOf(prefix) == -1) {
-					continue;
-				}
-				if (uri.indexOf(/\/items\//) != -1 && !Zotero.URI.getURIItem(uri)) {
-					this.eraseByURI(uri);
-				}
-				if (uri.indexOf(/\/collections\//) != -1 && !Zotero.URI.getURICollection(uri)) {
-					this.eraseByURI(uri);
+			try {
+				Zotero.DB.beginTransaction();
+				for each(var uri in uris) {
+					// Skip URIs that don't begin with the default prefix,
+					// since they don't correspond to local items
+					if (uri.indexOf(prefix) == -1) {
+						continue;
+					}
+					if (uri.indexOf(/\/items\//) != -1 && !Zotero.URI.getURIItem(uri)) {
+						this.eraseByURI(uri);
+					}
+					if (uri.indexOf(/\/collections\//) != -1 && !Zotero.URI.getURICollection(uri)) {
+						this.eraseByURI(uri);
+					}
 				}
+				Zotero.DB.commitTransaction();
+			}
+			catch (e) {
+				Zotero.debug(e);
+				Zotero.debug(Zotero.DB.query("SELECT * FROM relations"));
 			}
-			Zotero.DB.commitTransaction();
 		}
 	}