diff --git a/limestone.js b/limestone.js
index 9bf916d..4626b11 100644
--- a/limestone.js
+++ b/limestone.js
@@ -559,7 +559,9 @@ exports.SphinxClient = function() {
         var data = this.read();
         // Got response!
         response_output.append(data);
-	    response_output.runCallbackIfDone(_queue[0]['search_command']);
+		if (_queue.length > 0) {
+			response_output.runCallbackIfDone(_queue[0]['search_command']);
+		}
     }
 
     function initResponseOutput(query_callback) {
@@ -584,14 +586,15 @@ exports.SphinxClient = function() {
                 }
             },
             append  : function(data) {
-                //this.data.write(data.toString('utf-8'), 'utf-8');
-                // console.log('Appending ' + data.length + ' bytes');
-                var new_buffer = new Buffer(this.data.length + data.length);
-                this.data.copy(new_buffer, 0, 0);
-                data.copy(new_buffer, this.data.length, 0);
-                this.data = new_buffer;
-                // console.log('Data length after appending: ' + this.data.length);
-                this.parseHeader();
+				if (data) {
+					//this.data.write(data.toString('utf-8'), 'utf-8');
+					var new_buffer = new Buffer(this.data.length + data.length);
+					this.data.copy(new_buffer, 0, 0);
+					data.copy(new_buffer, this.data.length, 0);
+					this.data = new_buffer;
+					// console.log('Data length after appending: ' + this.data.length);
+					this.parseHeader();
+				}
             },
             done : function() {
                 // console.log('Length: ' + this.data.length + ' / ' + this.length);
diff --git a/purels.js b/purels.js
index 8e46ef0..e1ae5c1 100644
--- a/purels.js
+++ b/purels.js
@@ -1,13 +1,17 @@
 var limestone = require("./limestone").SphinxClient();
 
+var testString = 'test';
+
 // 9312 is standard Sphinx port
 limestone.connect(9312, function(err) {
     if (err) {
-        console.log('Connection error: ' + err);
+        console.log('Connection error: ' + err.message);
+		console.log('Maybe Sphinx is not started or uses port different than 9312');
+		process.exit();
     }
     console.log('Connected, sending query');
-    limestone.query({'query':'test', maxmatches:1, 'fieldweights': {'name': 80, 'body': 30}}, function(err, answer) {
+    limestone.query({'query':testString, maxmatches:1, 'fieldweights': {'name': 80, 'body': 30}}, function(err, answer) {
         limestone.disconnect();
-        console.log("Extended search for 'test' yielded " + answer.match_count + " results: " + JSON.stringify(answer));
+        console.log("Extended search for '" + testString + "' yielded " + answer.match_count + " results: " + JSON.stringify(answer));
     });
-});
+});
\ No newline at end of file