diff --git a/lib/Connection.js b/lib/Connection.js
index 292d854e..6fcf5cca 100644
--- a/lib/Connection.js
+++ b/lib/Connection.js
@@ -193,8 +193,16 @@ Connection.prototype.connect = function() {
     self._resTagged(info);
   });
   parser.on('body', function(stream, info) {
-    var msg = self._curReq.fetchCache[info.seqno], toget;
-
+    if (!self._curReq) {
+      stream.resume();
+      return;
+    }
+    var msg = undefined;
+    var toget;
+    if (self._curReq.fetchCache.hasOwnProperty(info.seqno)) {
+      msg = self._curReq.fetchCache[info.seqno];
+    }
+    
     if (msg === undefined) {
       msg = self._curReq.fetchCache[info.seqno] = {
         msgEmitter: new EventEmitter(),
@@ -422,9 +430,11 @@ Connection.prototype.openBox = function(name, readOnly, cb) {
     if (err) {
       self._box = undefined;
       cb(err);
-    } else {
+    } else if (self._box) {
       self._box.name = name;
       cb(err, self._box);
+    } else {
+      cb(new Error('No mailbox is currently selected'));
     }
   });
 };
@@ -1400,7 +1410,7 @@ Connection.prototype._resUntagged = function(info) {
     }
     this._curReq.cbargs.push(box);
    } else if (type === 'fetch') {
-    if (/^(?:UID )?FETCH/.test(this._curReq.fullcmd)) {
+    if (this._curReq && /^(?:UID )?FETCH/.test(this._curReq.fullcmd)) {
       // FETCH response sent as result of FETCH request
       var msg = this._curReq.fetchCache[info.num],
           keys = Object.keys(info.text),