copytask.diff

diff --git a/lib/copytask.js b/lib/copytask.js
index 1873f2b..471f373 100644
--- a/lib/copytask.js
+++ b/lib/copytask.js
@@ -61,7 +61,8 @@ CopyTask.prototype.toJSON = function() {
 
 CopyTask.prototype.finished = function() {
     var task = this;
-    this.pause(function() {
+    this.pause(function(err) {
+        if (err) throw err;
         task.emit('finished');
     });
 };