diff --git a/src/cutecoin/core/transfer.py b/src/cutecoin/core/transfer.py
index 587c656976342622dc906bd757c011afb86559fb..859968201a9d27901228c12af9fcd293d7f5caf7 100644
--- a/src/cutecoin/core/transfer.py
+++ b/src/cutecoin/core/transfer.py
@@ -73,7 +73,7 @@ class Transfer(QObject):
             (TransferState.TO_SEND, (list, Block)):
                 (
                     (self._broadcast_success, lambda l, b: self._wait(b), TransferState.AWAITING),
-                    (lambda l,b: self._broadcast_failure(b), None, TransferState.REFUSED),
+                    (lambda l,b: self._broadcast_failure(l), None, TransferState.REFUSED),
                 ),
             (TransferState.TO_SEND, ()):
                 ((self._is_locally_created, self._drop, TransferState.DROPPED),),
diff --git a/src/cutecoin/core/wallet.py b/src/cutecoin/core/wallet.py
index c2e906ed87b613925996f805ce59781c658e98ba..d7b0f901971bf2b416e42ada9776d480720c750a 100644
--- a/src/cutecoin/core/wallet.py
+++ b/src/cutecoin/core/wallet.py
@@ -225,9 +225,14 @@ class Wallet(QObject):
         :param int amount: The amount of money to transfer
         :param str message: The message to send with the transfer
         """
-        blockid = yield from community.blockid()
-        block = yield from community.bma_access.future_request(bma.blockchain.Block,
-                                  req_args={'number': blockid.number})
+        try:
+            blockid = yield from community.blockid()
+            block = yield from community.bma_access.future_request(bma.blockchain.Block,
+                                      req_args={'number': blockid.number})
+        except ValueError as e:
+            if '404' in str(e):
+                return (False, "Could not send transfer with null blockchain")
+
         time = block['medianTime']
         txid = len(block['transactions'])
         key = None
diff --git a/src/cutecoin/tests/gui/transfer/test_transfer.py b/src/cutecoin/tests/gui/transfer/test_transfer.py
index c2283027a03c484838e91357e69ffa8deea59dcc..e3dc8327c58f44abf7d9ee3c99aea48dd71e4336 100644
--- a/src/cutecoin/tests/gui/transfer/test_transfer.py
+++ b/src/cutecoin/tests/gui/transfer/test_transfer.py
@@ -29,7 +29,7 @@ class TestTransferDialog(unittest.TestCase):
         QLocale.setDefault(QLocale("en_GB"))
         self.lp = quamash.QEventLoop(self.qapplication)
         asyncio.set_event_loop(self.lp)
-        self.lp.set_exception_handler(lambda lp, ctx : unitttest_exception_handler(self, lp, ctx))
+        #self.lp.set_exception_handler(lambda lp, ctx : unitttest_exception_handler(self, lp, ctx))
         self.identities_registry = IdentitiesRegistry({})
 
         self.application = Application(self.qapplication, self.lp, self.identities_registry)
@@ -72,11 +72,12 @@ class TestTransferDialog(unittest.TestCase):
                                               self.password_asker,
                                               self.community,
                                               None)
+        self.account.wallets[0].init_cache(self.application, self.community)
 
         @asyncio.coroutine
         def open_dialog(certification_dialog):
             result = yield from certification_dialog.async_exec()
-            self.assertEqual(result, QDialog.Rejected)
+            self.assertEqual(result, QDialog.Accepted)
 
         def close_dialog():
             if transfer_dialog.isVisible():
@@ -85,9 +86,11 @@ class TestTransferDialog(unittest.TestCase):
         @asyncio.coroutine
         def exec_test():
             yield from asyncio.sleep(1)
+            self.account.wallets[0].caches[self.community.currency].available_sources = yield from self.wallet.sources(self.community)
             QTest.mouseClick(transfer_dialog.radio_pubkey, Qt.LeftButton)
             QTest.keyClicks(transfer_dialog.edit_pubkey, "FADxcH5LmXGmGFgdixSes6nWnC4Vb4pRUBYT81zQRhjn")
-            QTest.mouseClick(transfer_dialog.button_box.button(QDialogButtonBox.Cancel), Qt.LeftButton)
+            transfer_dialog.spinbox_amount.setValue(10)
+            QTest.mouseClick(transfer_dialog.button_box.button(QDialogButtonBox.Ok), Qt.LeftButton)
             yield from asyncio.sleep(1)
             topWidgets = QApplication.topLevelWidgets()
             for w in topWidgets:
diff --git a/src/cutecoin/tests/mocks/bma/nice_blockchain.py b/src/cutecoin/tests/mocks/bma/nice_blockchain.py
index 76d21e57a626b90a6e7e2fbf74e4b8fc1a916af6..e1f932902f39cac6964ed12a7c8fa5ca14482bcf 100644
--- a/src/cutecoin/tests/mocks/bma/nice_blockchain.py
+++ b/src/cutecoin/tests/mocks/bma/nice_blockchain.py
@@ -107,6 +107,58 @@ bma_parameters = {
     "percentRot": 0.67
 }
 
+bma_blockchain_0 = {
+  "version": 1,
+  "nonce": 10144,
+  "number": 0,
+  "powMin": 3,
+  "time": 1421838980,
+  "medianTime": 1421838980,
+  "membersCount": 4,
+  "monetaryMass": 0,
+  "currency": "test_currency",
+  "issuer": "FADxcH5LmXGmGFgdixSes6nWnC4Vb4pRUBYT81zQRhjn",
+  "signature": "+78w7251vvRdhoIJ6IWHEiEOLxNrmfQf45Y5sYvPdnAdXkVpO1unMV5YA/G5Vhphyz1dICrbeKCPM5qbFsoWAQ==",
+  "hash": "00063EB6E83F8717CEF1D25B3E2EE308374A14B1",
+  "parameters": "0.1:86400:100:604800:2629800:3:3:2629800:3:11:600:20:144:0.67",
+  "previousHash": None,
+  "previousIssuer": None,
+  "dividend": None,
+  "membersChanges": [],
+  "identities": [
+    "8Fi1VSTbjkXguwThF4v2ZxC5whK7pwG2vcGTkPUPjPGU:Ot3zIp/nsHT3zgJy+2YcXPL6vaM5WFsD+F8w3qnJoBRuBG6lv761zoaExp2iyUnm8fDAyKPpMxRK2kf437QSCw==:1421787800:inso",
+    "HnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk:GZKLgaxJKL+GqxVLePMt8OVLJ6qTLrib5Mr/j2gjiNRY2k485YLB2OlzhBzZVnD3xLs0xi69JUfmLnM54j3aCA==:1421786393:cgeek",
+    "BMAVuMDcGhYAV4wA27DL1VXX2ZARZGJYaMwpf7DJFMYH:th576H89dfymkG7/sH+DAIzjlmIqNEW6zY3ONrGeAml+k3f1ver399kYnEgG5YCaKXnnVM7P0oJHah80BV3mDw==:1421790376:moul",
+    "37qBxM4hLV2jfyYo2bNzAjkeLngLr2r7G2HpdpKieVxw:XRmbTYFkPeGVEU2mJzzN4h1oVNDsZ4yyNZlDAfBm9CWhBsZ82QqX9GPHye2hBxxiu4Nz1BHgQiME6B4JcAC8BA==:1421787461:galuel"
+  ],
+  "joiners": [
+    "8Fi1VSTbjkXguwThF4v2ZxC5whK7pwG2vcGTkPUPjPGU:ccJm3F44eLMhQtnQY/7+14SWCDqVTL3Miw65hBVpV+YiUSUknIGhBNN0C0Cf+Pf0/pa1tjucW8Us3z5IklFSDg==:0:DA39A3EE5E6B4B0D3255BFEF95601890AFD80709:1421787800:inso",
+    "HnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk:1lFIiaR0QX0jibr5zQpXVGzBvMGqcsTRlmHiwGz5HOAZT8PTdVUb5q6YGZ6qAUZjdMjPmhLaiMIpYc47wUnzBA==:0:DA39A3EE5E6B4B0D3255BFEF95601890AFD80709:1421786393:cgeek",
+    "BMAVuMDcGhYAV4wA27DL1VXX2ZARZGJYaMwpf7DJFMYH:ctyAhpTRrAAOhFJukWI8RBr//nqYYdQibVzjOfaCdcWLb3TNFKrNBBothNsq/YrYHr7gKrpoftucf/oxLF8zAg==:0:DA39A3EE5E6B4B0D3255BFEF95601890AFD80709:1421790376:moul",
+    "37qBxM4hLV2jfyYo2bNzAjkeLngLr2r7G2HpdpKieVxw:uoiGaC5b7kWqtqdPxwatPk9QajZHCNT9rf8/8ud9Rli24z/igcOf0Zr4A6RTAIKWUq9foW39VqJe+Y9R3rhACw==:0:DA39A3EE5E6B4B0D3255BFEF95601890AFD80709:1421787461:galuel"
+  ],
+  "actives": [],
+  "leavers": [],
+  "excluded": [],
+  "certifications": [
+    "37qBxM4hLV2jfyYo2bNzAjkeLngLr2r7G2HpdpKieVxw:8Fi1VSTbjkXguwThF4v2ZxC5whK7pwG2vcGTkPUPjPGU:0:3wmCVW8AbVxRFm2PuLXD9UTCIg93MhUblZJvlYrDldSV4xuA7mZCd8TV4vb/6Bkc0FMQgBdHtpXrQ7dpo20uBA==",
+    "HnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk:8Fi1VSTbjkXguwThF4v2ZxC5whK7pwG2vcGTkPUPjPGU:0:7UMQsUjLvuiZKIzOH5rrZDdDi5rXUo69EuQulY1Zm42xpRx/Gt5CkoTcJ/Mu83oElQbcZZTz/lVJ6IS0jzMiCQ==",
+    "BMAVuMDcGhYAV4wA27DL1VXX2ZARZGJYaMwpf7DJFMYH:8Fi1VSTbjkXguwThF4v2ZxC5whK7pwG2vcGTkPUPjPGU:0:twWSY9etI82FLEHzhdqIoHsC9ehWCA7DCPiGxDLCWGPO4TG77hwtn3RcC68qoKHCib577JCp+fcKyp2vyI6FDA==",
+    "8Fi1VSTbjkXguwThF4v2ZxC5whK7pwG2vcGTkPUPjPGU:HnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk:0:7K5MHkO8ibf5SchmPkRrmsg9owEZZ23uEMJJSQYG7L3PUmAKmmV/0VSjivxXH8gJGQBGsXQoK79x1jsYnj2nAg==",
+    "BMAVuMDcGhYAV4wA27DL1VXX2ZARZGJYaMwpf7DJFMYH:HnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk:0:Jua4FcEJFptSE5OoG1/Mgzx4e9jgGnYu7t8g1sqqPujI9hRhLFNXbQXedPS1q1OD5vWivA045gKOq/gnj8opDg==",
+    "37qBxM4hLV2jfyYo2bNzAjkeLngLr2r7G2HpdpKieVxw:HnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk:0:R/DV4/wYjvBG09QSOGtnxd3bfPFhVjEE5Uy3BsBMVUvjLsgxjf8NgLhYVozcHTRWS43ArxlXKfS5m3+KIPhhAQ==",
+    "8Fi1VSTbjkXguwThF4v2ZxC5whK7pwG2vcGTkPUPjPGU:BMAVuMDcGhYAV4wA27DL1VXX2ZARZGJYaMwpf7DJFMYH:0:4hP+ahJK021akL4UxB6c5QLaGJXa9eapd3nfdFQe+Xy87f/XLhj8BCa22XbbOlyGdaZRT3AYzbCL2UD5tI8mCw==",
+    "HnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk:BMAVuMDcGhYAV4wA27DL1VXX2ZARZGJYaMwpf7DJFMYH:0:sZTQJr0d/xQnxrIIdSePUJpSTOa8v6IYGXMF2fVDZxQU8vwfzPm2dUKTaF0nU6E9wOYszzkBHaXL85nir+WtCQ==",
+    "37qBxM4hLV2jfyYo2bNzAjkeLngLr2r7G2HpdpKieVxw:BMAVuMDcGhYAV4wA27DL1VXX2ZARZGJYaMwpf7DJFMYH:0:hDuBkoFhWhR/FgOU1+9SbQGBMIr47xqUzw1ZMERaPQo4aWm0WFbZurG4lvuJZzTyG6RF/gSw4VPvYZFPxWmADg==",
+    "8Fi1VSTbjkXguwThF4v2ZxC5whK7pwG2vcGTkPUPjPGU:37qBxM4hLV2jfyYo2bNzAjkeLngLr2r7G2HpdpKieVxw:0:79ZVrBehElVZh82fJdR18IJx06GkEVZTbwdHH4zb0S6VaGwdtLh1rvomm4ukBvUc8r/suTweG/SScsJairXNAg==",
+    "HnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk:37qBxM4hLV2jfyYo2bNzAjkeLngLr2r7G2HpdpKieVxw:0:e/ai9E4G5CFB9Qi329e0ffYpZMgxj8mM4rviqIr2+UESA0UG86OuAAyHO11hYeyolZRiU8I7WdtNE98B1uZuBg==",
+    "BMAVuMDcGhYAV4wA27DL1VXX2ZARZGJYaMwpf7DJFMYH:37qBxM4hLV2jfyYo2bNzAjkeLngLr2r7G2HpdpKieVxw:0:q4PCneYkcPH8AHEqEvqTtYQWslhlYO2B87aReuOl1uPczn5Q3VkZFAsU48ZTYryeyWp2nxdQojdFYhlAUNchAw=="
+  ],
+  "transactions": [],
+  "raw": "Version: 1\nType: Block\nCurrency: test_currency\nNonce: 10144\nNumber: 0\nPoWMin: 3\nTime: 1421838980\nMedianTime: 1421838980\nIssuer: HnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk\nParameters: 0.1:86400:100:604800:2629800:3:3:2629800:3:11:600:20:144:0.67\nMembersCount: 4\nIdentities:\n8Fi1VSTbjkXguwThF4v2ZxC5whK7pwG2vcGTkPUPjPGU:Ot3zIp/nsHT3zgJy+2YcXPL6vaM5WFsD+F8w3qnJoBRuBG6lv761zoaExp2iyUnm8fDAyKPpMxRK2kf437QSCw==:1421787800:inso\nHnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk:GZKLgaxJKL+GqxVLePMt8OVLJ6qTLrib5Mr/j2gjiNRY2k485YLB2OlzhBzZVnD3xLs0xi69JUfmLnM54j3aCA==:1421786393:cgeek\nBMAVuMDcGhYAV4wA27DL1VXX2ZARZGJYaMwpf7DJFMYH:th576H89dfymkG7/sH+DAIzjlmIqNEW6zY3ONrGeAml+k3f1ver399kYnEgG5YCaKXnnVM7P0oJHah80BV3mDw==:1421790376:moul\n37qBxM4hLV2jfyYo2bNzAjkeLngLr2r7G2HpdpKieVxw:XRmbTYFkPeGVEU2mJzzN4h1oVNDsZ4yyNZlDAfBm9CWhBsZ82QqX9GPHye2hBxxiu4Nz1BHgQiME6B4JcAC8BA==:1421787461:galuel\nJoiners:\n8Fi1VSTbjkXguwThF4v2ZxC5whK7pwG2vcGTkPUPjPGU:ccJm3F44eLMhQtnQY/7+14SWCDqVTL3Miw65hBVpV+YiUSUknIGhBNN0C0Cf+Pf0/pa1tjucW8Us3z5IklFSDg==:0:DA39A3EE5E6B4B0D3255BFEF95601890AFD80709:1421787800:inso\nHnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk:1lFIiaR0QX0jibr5zQpXVGzBvMGqcsTRlmHiwGz5HOAZT8PTdVUb5q6YGZ6qAUZjdMjPmhLaiMIpYc47wUnzBA==:0:DA39A3EE5E6B4B0D3255BFEF95601890AFD80709:1421786393:cgeek\nBMAVuMDcGhYAV4wA27DL1VXX2ZARZGJYaMwpf7DJFMYH:ctyAhpTRrAAOhFJukWI8RBr//nqYYdQibVzjOfaCdcWLb3TNFKrNBBothNsq/YrYHr7gKrpoftucf/oxLF8zAg==:0:DA39A3EE5E6B4B0D3255BFEF95601890AFD80709:1421790376:moul\n37qBxM4hLV2jfyYo2bNzAjkeLngLr2r7G2HpdpKieVxw:uoiGaC5b7kWqtqdPxwatPk9QajZHCNT9rf8/8ud9Rli24z/igcOf0Zr4A6RTAIKWUq9foW39VqJe+Y9R3rhACw==:0:DA39A3EE5E6B4B0D3255BFEF95601890AFD80709:1421787461:galuel\nActives:\nLeavers:\nExcluded:\nCertifications:\n37qBxM4hLV2jfyYo2bNzAjkeLngLr2r7G2HpdpKieVxw:8Fi1VSTbjkXguwThF4v2ZxC5whK7pwG2vcGTkPUPjPGU:0:3wmCVW8AbVxRFm2PuLXD9UTCIg93MhUblZJvlYrDldSV4xuA7mZCd8TV4vb/6Bkc0FMQgBdHtpXrQ7dpo20uBA==\nHnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk:8Fi1VSTbjkXguwThF4v2ZxC5whK7pwG2vcGTkPUPjPGU:0:7UMQsUjLvuiZKIzOH5rrZDdDi5rXUo69EuQulY1Zm42xpRx/Gt5CkoTcJ/Mu83oElQbcZZTz/lVJ6IS0jzMiCQ==\nBMAVuMDcGhYAV4wA27DL1VXX2ZARZGJYaMwpf7DJFMYH:8Fi1VSTbjkXguwThF4v2ZxC5whK7pwG2vcGTkPUPjPGU:0:twWSY9etI82FLEHzhdqIoHsC9ehWCA7DCPiGxDLCWGPO4TG77hwtn3RcC68qoKHCib577JCp+fcKyp2vyI6FDA==\n8Fi1VSTbjkXguwThF4v2ZxC5whK7pwG2vcGTkPUPjPGU:HnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk:0:7K5MHkO8ibf5SchmPkRrmsg9owEZZ23uEMJJSQYG7L3PUmAKmmV/0VSjivxXH8gJGQBGsXQoK79x1jsYnj2nAg==\nBMAVuMDcGhYAV4wA27DL1VXX2ZARZGJYaMwpf7DJFMYH:HnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk:0:Jua4FcEJFptSE5OoG1/Mgzx4e9jgGnYu7t8g1sqqPujI9hRhLFNXbQXedPS1q1OD5vWivA045gKOq/gnj8opDg==\n37qBxM4hLV2jfyYo2bNzAjkeLngLr2r7G2HpdpKieVxw:HnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk:0:R/DV4/wYjvBG09QSOGtnxd3bfPFhVjEE5Uy3BsBMVUvjLsgxjf8NgLhYVozcHTRWS43ArxlXKfS5m3+KIPhhAQ==\n8Fi1VSTbjkXguwThF4v2ZxC5whK7pwG2vcGTkPUPjPGU:BMAVuMDcGhYAV4wA27DL1VXX2ZARZGJYaMwpf7DJFMYH:0:4hP+ahJK021akL4UxB6c5QLaGJXa9eapd3nfdFQe+Xy87f/XLhj8BCa22XbbOlyGdaZRT3AYzbCL2UD5tI8mCw==\nHnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk:BMAVuMDcGhYAV4wA27DL1VXX2ZARZGJYaMwpf7DJFMYH:0:sZTQJr0d/xQnxrIIdSePUJpSTOa8v6IYGXMF2fVDZxQU8vwfzPm2dUKTaF0nU6E9wOYszzkBHaXL85nir+WtCQ==\n37qBxM4hLV2jfyYo2bNzAjkeLngLr2r7G2HpdpKieVxw:BMAVuMDcGhYAV4wA27DL1VXX2ZARZGJYaMwpf7DJFMYH:0:hDuBkoFhWhR/FgOU1+9SbQGBMIr47xqUzw1ZMERaPQo4aWm0WFbZurG4lvuJZzTyG6RF/gSw4VPvYZFPxWmADg==\n8Fi1VSTbjkXguwThF4v2ZxC5whK7pwG2vcGTkPUPjPGU:37qBxM4hLV2jfyYo2bNzAjkeLngLr2r7G2HpdpKieVxw:0:79ZVrBehElVZh82fJdR18IJx06GkEVZTbwdHH4zb0S6VaGwdtLh1rvomm4ukBvUc8r/suTweG/SScsJairXNAg==\nHnFcSms8jzwngtVomTTnzudZx7SHUQY8sVE1y8yBmULk:37qBxM4hLV2jfyYo2bNzAjkeLngLr2r7G2HpdpKieVxw:0:e/ai9E4G5CFB9Qi329e0ffYpZMgxj8mM4rviqIr2+UESA0UG86OuAAyHO11hYeyolZRiU8I7WdtNE98B1uZuBg==\nBMAVuMDcGhYAV4wA27DL1VXX2ZARZGJYaMwpf7DJFMYH:37qBxM4hLV2jfyYo2bNzAjkeLngLr2r7G2HpdpKieVxw:0:q4PCneYkcPH8AHEqEvqTtYQWslhlYO2B87aReuOl1uPczn5Q3VkZFAsU48ZTYryeyWp2nxdQojdFYhlAUNchAw==\nTransactions:\n"
+}
+
+
 bma_blockchain_current = {
     "version": 1,
     "nonce": 6909,
@@ -303,6 +355,12 @@ def get_mock():
                 times=FOREVER,
                 headers={'Content-Type': 'application/json'})
 
+    mock.when('GET /blockchain/block/0')\
+            .reply(body=bytes(json.dumps(bma_blockchain_0), "utf-8"),
+                status=200,
+                times=FOREVER,
+                headers={'Content-Type': 'application/json'})
+
     mock.when('GET /blockchain/block/15')\
             .reply(body=bytes(json.dumps(bma_blockchain_current), "utf-8"),
                 status=200,
@@ -321,7 +379,6 @@ def get_mock():
                 times=FOREVER,
                 headers={'Content-Type': 'application/json'})
 
-
     mock.when('GET /ud/history/7Aqw6Efa9EzE7gtsc8SveLLrM7gm6NEGoywSv4FJx6pZ')\
             .reply(body=bytes(json.dumps(bma_udhistory_john), "utf-8"),
                 status=200,
@@ -382,4 +439,10 @@ def get_mock():
                 times=FOREVER,
                 headers={'Content-Type': 'application/json'})
 
+    mock.when('POST /tx/process')\
+            .reply(body=b"",
+                status=200,
+                times=FOREVER,
+                headers={'Content-Type': 'application/json'})
+
     return mock