diff --git a/src/cutecoin/core/app.py b/src/cutecoin/core/app.py
index e351f3ef84b0f9b10acd622ea6823503b55ec517..16aaab65e6cc82c88b6ffea0a61b2388d67158c1 100644
--- a/src/cutecoin/core/app.py
+++ b/src/cutecoin/core/app.py
@@ -9,9 +9,10 @@ import logging
 import json
 import tarfile
 
-from cutecoin.core import config
-from cutecoin.tools.exceptions import NameAlreadyExists, BadAccountFile
-from cutecoin.core.account import Account
+from . import config
+from ..tools.exceptions import NameAlreadyExists, BadAccountFile
+from .account import Account
+from .. import __version__
 
 
 class Application(object):
@@ -90,7 +91,10 @@ class Application(object):
             if os.path.exists(wallet_path):
                 with open(wallet_path, 'r') as json_data:
                     data = json.load(json_data)
-                wallet.load_caches(data)
+                if 'version' in data and data['version'] == __version__:
+                    wallet.load_caches(data)
+                else:
+                    os.remove(wallet_path)
             for community in account.communities:
                 wallet.refresh_cache(community)
 
@@ -112,7 +116,9 @@ class Application(object):
             wallet_path = os.path.join(config.parameters['home'],
                                         account.name, '__cache__', wallet.pubkey)
             with open(wallet_path, 'w') as outfile:
-                json.dump(wallet.jsonify_caches(), outfile, indent=4, sort_keys=True)
+                data = wallet.jsonify_caches()
+                data['version'] = __version__
+                json.dump(data, outfile, indent=4, sort_keys=True)
 
     def import_account(self, file, name):
         with tarfile.open(file, "r") as tar:
diff --git a/src/cutecoin/core/wallet.py b/src/cutecoin/core/wallet.py
index 785fa332d30db6f1e17efae6ef2e985d90bcbc69..87121814f28c0488d74996118a8eada4336da217 100644
--- a/src/cutecoin/core/wallet.py
+++ b/src/cutecoin/core/wallet.py
@@ -27,6 +27,7 @@ class Cache():
         self.tx_received = []
         self.tx_sent = []
         self.awaiting_tx = []
+        logging.debug(data)
 
         data_received = data['received']
         for r in data_received:
@@ -164,8 +165,9 @@ class Wallet(object):
 
     def load_caches(self, json_data):
         for currency in json_data:
-            self.caches[currency] = Cache(self)
-            self.caches[currency].load_from_json(json_data[currency])
+            if currency != 'version':
+                self.caches[currency] = Cache(self)
+                self.caches[currency].load_from_json(json_data[currency])
 
     def jsonify_caches(self):
         data = {}
diff --git a/src/cutecoin/gui/currency_tab.py b/src/cutecoin/gui/currency_tab.py
index d26eb081deefc14c478a2ba7803a11733872fe16..5fa02a661cac5b9d66c883944d1a9b6312723f52 100644
--- a/src/cutecoin/gui/currency_tab.py
+++ b/src/cutecoin/gui/currency_tab.py
@@ -208,7 +208,7 @@ class CurrencyTabWidget(QWidget, Ui_CurrencyTabWidget):
                 copy_pubkey.triggered.connect(self.copy_pubkey_to_clipboard)
                 copy_pubkey.setData(person)
 
-            menu.addAction(copy_pubkey)
+                menu.addAction(copy_pubkey)
             # Show the context menu.
             menu.exec_(self.table_history.mapToGlobal(point))