C2DM registers itself for the event via the handler, which receives a…

…n error and token, but captureToken needs to check that there is no error and that the token exists before attempting to perform a regex match on the token, otherwise we throw an exception that nobody can catch because we're in an unwrapped event handler

lib/c2dm.js

@@ -40,8 +40,10 @@ util.inherits(C2DM, emitter);
 exports.C2DM = C2DM;
 
 C2DM.prototype.captureToken = function(err, token) {
-    token = 'auth=' + token.replace(/Auth=/i,'');
-    this.token = token;
+    if (!err && token) {
+        token = 'auth=' + token.replace(/Auth=/i,'');
+        this.token = token;
+    }
 };
 
 C2DM.prototype.login = function(cb) {