diff --git a/js/controllers/send.js b/js/controllers/send.js
index 683b6c71c..d12868d40 100644
--- a/js/controllers/send.js
+++ b/js/controllers/send.js
@@ -465,6 +465,40 @@ angular.module('copayApp.controllers').controller('SendController',
       $scope.loadTxs();
     };
 
+    $scope.clearMerchant = function(callback) {
+      var scope = $scope;
+      // TODO: Find a better way of detecting
+      // whether we're in the Send scope or not.
+      if (!scope.sendForm || !scope.sendForm.address) {
+        delete $rootScope.merchant;
+        if (callback) callback();
+        return;
+      }
+      var val = scope.sendForm.address.$viewValue || '';
+      var uri;
+      // If we're setting the domain, ignore the change.
+      if ($rootScope.merchant && $rootScope.merchant.domain && val === $rootScope.merchant.domain) {
+        uri = {
+          merchant: $rootScope.merchant.request_url
+        };
+      }
+      if (val.indexOf('bitcoin:') === 0) {
+        uri = new bitcore.BIP21(val).data;
+      } else if (/^https?:\/\//.test(val)) {
+        uri = {
+          merchant: val
+        };
+      }
+      if (!uri || !uri.merchant) {
+        delete $rootScope.merchant;
+        scope.sendForm.amount.$setViewValue('');
+        scope.sendForm.amount.$render();
+        if (callback) callback();
+        if ($rootScope.$$phase !== '$apply' && $rootScope.$$phase !== '$digest') {
+          $rootScope.$apply();
+        }
+      }
+    };
 
     $scope.onChanged = function() {
       var scope = $scope;
@@ -552,31 +586,8 @@ angular.module('copayApp.controllers').controller('SendController',
 
         // If the address changes to a non-payment-protocol one,
         // delete the `merchant` property from the scope.
-        var unregister = scope.$watch('address', function() {
-          var val = scope.sendForm.address.$viewValue || '';
-          var uri;
-          // If we're setting the domain, ignore the change.
-          if ($rootScope.merchant && $rootScope.merchant.domain && val === $rootScope.merchant.domain) {
-            uri = {
-              merchant: $rootScope.merchant.request_url
-            };
-          }
-          if (val.indexOf('bitcoin:') === 0) {
-            uri = new bitcore.BIP21(val).data;
-          } else if (/^https?:\/\//.test(val)) {
-            uri = {
-              merchant: val
-            };
-          }
-          if (!uri || !uri.merchant) {
-            delete $rootScope.merchant;
-            scope.sendForm.amount.$setViewValue('');
-            scope.sendForm.amount.$render();
-            unregister();
-            if ($rootScope.$$phase !== '$apply' && $rootScope.$$phase !== '$digest') {
-              $rootScope.$apply();
-            }
-          }
+        var unregister = $rootScope.$watch(function() {
+          $scope.clearMerchant(unregister);
         });
 
         if ($rootScope.$$phase !== '$apply' && $rootScope.$$phase !== '$digest') {
diff --git a/js/models/core/Wallet.js b/js/models/core/Wallet.js
index 61e81b137..63ffebafa 100644
--- a/js/models/core/Wallet.js
+++ b/js/models/core/Wallet.js
@@ -1295,7 +1295,7 @@ Wallet.prototype.createPaymentTx = function(options, cb) {
       return self.receivePaymentRequest(options, pr, cb);
     })
     .error(function(data, status, headers, config) {
-      return cb(new Error('Status: ' + JSON.stringify(status)));
+      return cb(new Error('Status: ' + status));
     });
 };
 
@@ -1408,7 +1408,10 @@ Wallet.prototype.receivePaymentRequest = function(options, pr, cb) {
         expires: expires,
         memo: memo || 'This server would like some BTC from you.',
         payment_url: payment_url,
-        merchant_data: merchant_data.toString('hex')
+        merchant_data: merchant_data
+          ? merchant_data.toString('hex')
+          // : new Buffer('none', 'utf8').toString('hex')
+          : '00'
       },
       signature: sig.toString('hex'),
       ca: trust.caName,
@@ -1572,7 +1575,7 @@ Wallet.prototype.sendPaymentTx = function(ntxid, options, cb) {
       return self.receivePaymentRequestACK(ntxid, tx, txp, ack, cb);
     })
     .error(function(data, status, headers, config) {
-      return cb(new Error('Status: ' + JSON.stringify(status)));
+      return cb(new Error('Status: ' + status));
     });
 };
 
@@ -2483,15 +2486,6 @@ Wallet.prototype.verifySignedJson = function(senderId, payload, signature) {
   return v;
 }
 
-// NOTE: Angular $http module does not send ArrayBuffers correctly, so we're
-// not going to use it. We'll have to write our own. Otherwise, we could
-// hex-encoded our messages and decode them on the other side, but that
-// deviates from BIP-70.
-
-// if (typeof angular !== 'undefined') {
-//   var $http = angular.bootstrap().get('$http');
-// }
-
 /**
  * @desc Create a HTTP request
  * @TODO: This shouldn't be a wallet responsibility
@@ -2557,7 +2551,13 @@ Wallet.request = function(options, callback) {
   };
 
   xhr.onerror = function(event) {
-    return ret._error(null, new Error(event.message), null, options);
+    var status;
+    if (xhr.status === 0 || !xhr.statusText) {
+      status = 'HTTP Request Error: This endpoint likely does not support cross-origin requests.';
+    } else {
+      status = xhr.statusText;
+    }
+    return ret._error(null, status, null, options);
   };
 
   if (req.body) {