diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index de1356e5..9aa61bef 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -6,7 +6,10 @@ This document describes changes between each past release.
 2.1 (unreleased)
 ----------------
 
-- Nothing changed yet.
+Fixed
+=====
+
+- Fix the "IOError" crash when running `ihatemoney generate-config` (#308)
 
 
 2.0 (2017-12-27)
diff --git a/MANIFEST.in b/MANIFEST.in
index 91d0edb2..74ea23b1 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,3 +1,3 @@
 include *.rst
-recursive-include ihatemoney *.rst *.py *.yaml *.po *.mo *.html *.css *.js *.eot *.svg *.woff *.txt *.png *.ini *.cfg
+recursive-include ihatemoney *.rst *.py *.yaml *.po *.mo *.html *.css *.js *.eot *.svg *.woff *.txt *.png *.ini *.cfg *.j2
 include LICENSE CONTRIBUTORS CHANGELOG.rst requirements.txt
diff --git a/dev-requirements.txt b/dev-requirements.txt
index 04358ae8..28116fac 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -3,3 +3,4 @@ tox
 pytest
 Flask-Testing
 Flake8
+mock; python_version < '3.3'
diff --git a/ihatemoney/manage.py b/ihatemoney/manage.py
index 797e6c4b..315cfac1 100755
--- a/ihatemoney/manage.py
+++ b/ihatemoney/manage.py
@@ -4,7 +4,7 @@ import os
 import pkgutil
 import random
 import sys
-from getpass import getpass
+import getpass
 
 from flask_script import Manager, Command, Option
 from flask_migrate import Migrate, MigrateCommand
@@ -20,11 +20,11 @@ class GeneratePasswordHash(Command):
     """Get password from user and hash it without printing it in clear text."""
 
     def run(self):
-        password = getpass(prompt='Password: ')
+        password = getpass.getpass(prompt='Password: ')
         print(generate_password_hash(password))
 
 
-class ConfigTemplate(Command):
+class GenerateConfig(Command):
     def get_options(self):
         return [
             Option('config_file', choices=[
@@ -74,7 +74,7 @@ def main():
     manager = Manager(app)
     manager.add_command('db', MigrateCommand)
     manager.add_command('generate_password_hash', GeneratePasswordHash)
-    manager.add_command('generate-config', ConfigTemplate)
+    manager.add_command('generate-config', GenerateConfig)
     manager.run()
 
 
diff --git a/ihatemoney/templates/invitation_mail.en b/ihatemoney/templates/invitation_mail.en.j2
similarity index 70%
rename from ihatemoney/templates/invitation_mail.en
rename to ihatemoney/templates/invitation_mail.en.j2
index eeaafdb9..42be0d25 100644
--- a/ihatemoney/templates/invitation_mail.en
+++ b/ihatemoney/templates/invitation_mail.en.j2
@@ -2,10 +2,10 @@ Hi,
 
 Someone using the email address {{ g.project.contact_email }} invited you to share your expenses for "{{ g.project.name }}".
 
-It's as simple as saying what did you paid for, for who, and how much did it cost you, we are caring about the rest.
+It's as simple as saying what did you pay for, for whom, and how much did it cost you, we are caring about the rest.
 
 You can log in using this link: {{ url_for(".authenticate", _external=True, token=g.project.generate_token()) }}.
-Once logged in you can use the following link which is easier to remember: {{ url_for(".list_bills", _external=True) }}
+Once logged-in, you can use the following link which is easier to remember: {{ url_for(".list_bills", _external=True) }}
 If your cookie gets deleted or if you log out, you will need to log back in using the first link.
 
 Enjoy,
diff --git a/ihatemoney/templates/invitation_mail.fr b/ihatemoney/templates/invitation_mail.fr.j2
similarity index 53%
rename from ihatemoney/templates/invitation_mail.fr
rename to ihatemoney/templates/invitation_mail.fr.j2
index a95f9e9e..197edcca 100644
--- a/ihatemoney/templates/invitation_mail.fr
+++ b/ihatemoney/templates/invitation_mail.fr.j2
@@ -1,11 +1,11 @@
 Salut,
 
-Quelqu'un avec l'addresse email "{{ g.project.contact_email }}" vous à invité à partager vos dépenses pour "{{ g.project.name }}".
+Quelqu'un avec l'adresse "{{ g.project.contact_email }}" vous à invité à partager vos dépenses pour "{{ g.project.name }}".
 
-C'est aussi simple que de dire qui à payé pour quoi, pour qui, et combien celà à coûté, on s'occuppe du reste.
+C'est aussi simple que de dire qui à payé pour quoi, pour qui, et combien celà à coûté, on s’occupe du reste.
 
 Vous pouvez vous authentifier avec le lien suivant: {{ url_for(".authenticate", _external=True, token=g.project.generate_token()) }}.
 Une fois authentifié, vous pouvez utiliser le lien suivant qui est plus facile à mémoriser: {{ url_for(".list_bills", _external=True) }}
-Si votre cookie est supprimé ou si vous vous déconnectez, voous devrez vous réauthentifier en utilisant le premier lien.
+Si votre cookie est supprimé ou si vous vous déconnectez, vous devrez vous authentifier à nouveau en utilisant le premier lien.
 
 Have fun,
diff --git a/ihatemoney/templates/password_reminder.en b/ihatemoney/templates/password_reminder.en.j2
similarity index 80%
rename from ihatemoney/templates/password_reminder.en
rename to ihatemoney/templates/password_reminder.en.j2
index bc7e609c..c6543546 100644
--- a/ihatemoney/templates/password_reminder.en
+++ b/ihatemoney/templates/password_reminder.en.j2
@@ -1,8 +1,8 @@
 Hi,
 
-You requested to reset the password of the following project: "{{ project.name }}". 
+You requested to reset the password of the following project: "{{ project.name }}".
 You can reset it here: {{ url_for(".reset_password", _external=True, token=project.generate_token(expiration=3600)) }}.
-This link is only valid for 1 hour.
+This link is only valid for one hour.
 
 Hope this helps,
 Some weird guys (with beards)
diff --git a/ihatemoney/templates/password_reminder.fr b/ihatemoney/templates/password_reminder.fr.j2
similarity index 100%
rename from ihatemoney/templates/password_reminder.fr
rename to ihatemoney/templates/password_reminder.fr.j2
diff --git a/ihatemoney/templates/reminder_mail.en b/ihatemoney/templates/reminder_mail.en.j2
similarity index 100%
rename from ihatemoney/templates/reminder_mail.en
rename to ihatemoney/templates/reminder_mail.en.j2
diff --git a/ihatemoney/templates/reminder_mail.fr b/ihatemoney/templates/reminder_mail.fr.j2
similarity index 100%
rename from ihatemoney/templates/reminder_mail.fr
rename to ihatemoney/templates/reminder_mail.fr.j2
diff --git a/ihatemoney/tests/tests.py b/ihatemoney/tests/tests.py
index de53c584..d4b6d7a1 100644
--- a/ihatemoney/tests/tests.py
+++ b/ihatemoney/tests/tests.py
@@ -4,6 +4,10 @@ try:
     import unittest2 as unittest
 except ImportError:
     import unittest  # NOQA
+try:
+    from unittest.mock import patch
+except ImportError:
+    from mock import patch
 
 import os
 import json
@@ -16,6 +20,7 @@ from flask import session
 from flask_testing import TestCase
 
 from ihatemoney.run import create_app, db, load_configuration
+from ihatemoney.manage import GenerateConfig, GeneratePasswordHash
 from ihatemoney import models
 from ihatemoney import utils
 
@@ -1406,5 +1411,27 @@ class ServerTestCase(IhatemoneyTestCase):
         self.assertStatus(200, req)
 
 
+class CommandTestCase(BaseTestCase):
+    def test_generate_config(self):
+        """ Simply checks that all config file generation
+        - raise no exception
+        - produce something non-empty
+        """
+        cmd = GenerateConfig()
+        for config_file in cmd.get_options()[0].kwargs['choices']:
+            with patch('sys.stdout', new=six.StringIO()) as stdout:
+                cmd.run(config_file)
+                print(stdout.getvalue())
+                self.assertNotEqual(len(stdout.getvalue().strip()), 0)
+
+    def test_generate_password_hash(self):
+        cmd = GeneratePasswordHash()
+        with patch('sys.stdout', new=six.StringIO()) as stdout, \
+             patch('getpass.getpass', new=lambda prompt: 'secret'): # NOQA
+            cmd.run()
+            print(stdout.getvalue())
+            self.assertEqual(len(stdout.getvalue().strip()), 187)
+
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/ihatemoney/web.py b/ihatemoney/web.py
index e6df385a..6b1b3589 100644
--- a/ihatemoney/web.py
+++ b/ihatemoney/web.py
@@ -242,7 +242,7 @@ def create_project():
             message_title = _("You have just created '%(project)s' "
                               "to share your expenses", project=g.project.name)
 
-            message_body = render_template("reminder_mail.%s" %
+            message_body = render_template("reminder_mail.%s.j2" %
                                            get_locale().language)
 
             msg = Message(message_title,
@@ -273,7 +273,7 @@ def remind_password():
             project = Project.query.get(form.id.data)
 
             # send a link to reset the password
-            password_reminder = "password_reminder.%s" % get_locale().language
+            password_reminder = "password_reminder.%s.j2" % get_locale().language
             current_app.mail.send(Message(
                 "password recovery",
                 body=render_template(password_reminder, project=project),
@@ -395,7 +395,7 @@ def invite():
         if form.validate():
             # send the email
 
-            message_body = render_template("invitation_mail.%s" %
+            message_body = render_template("invitation_mail.%s.j2" %
                                            get_locale().language)
 
             message_title = _("You have been invited to share your "
diff --git a/tox.ini b/tox.ini
index ddef0a1a..15c2b40f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,22 +6,31 @@ skip_missing_interpreters = True
 
 commands =
     python --version
-    py.test ihatemoney/tests/tests.py
+    py.test --pyargs ihatemoney.tests.tests
+
 deps =
     -rdev-requirements.txt
     -rrequirements.txt
 
-install_command = pip install --pre {opts} {packages}
+# To be sure we are importing ihatemoney pkg from pip-installed version
+changedir = /tmp
+
+install_command =
+    pip install --pre {opts} {packages}
+    pip install .
+
 
 [testenv:docs]
 commands = sphinx-build -a -n -b html -d docs/_build/doctrees docs docs/_build/html
 deps =
     -rdocs/requirements.txt
+changedir = {toxinidir}
 
 [testenv:lint]
 commands = flake8 ihatemoney
 deps =
     -rdev-requirements.txt
+changedir = {toxinidir}
 
 [flake8]
 exclude = migrations