diff --git a/.travis.yml b/.travis.yml
index b129497..29e4b51 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,7 +20,7 @@ env:
 install:
   - export PYTHONPATH=$PWD;
   - export DJANGO_SETTINGS_MODULE=django_test_settings;
-  - pip install -q Django==$DJANGO -r requirements.txt
+  - pip install -q Django==$DJANGO
 
 branches:
   only:
diff --git a/data_importer/__init__.py b/data_importer/__init__.py
index 973c9e4..0471fd2 100644
--- a/data_importer/__init__.py
+++ b/data_importer/__init__.py
@@ -1,4 +1,4 @@
 # encoding: utf-8
 __doc__ = 'Data Importer'
-__version__ = '3.0.0'
+__version__ = '3.0.1'
 __author__ = 'Valder Gallo <valdergallo@gmail.com>'
diff --git a/data_importer/importers/base.py b/data_importer/importers/base.py
index a812268..36b735a 100644
--- a/data_importer/importers/base.py
+++ b/data_importer/importers/base.py
@@ -1,9 +1,11 @@
 # encoding: utf-8
 from __future__ import unicode_literals
 import os
+import sys
 import re
 import io
 import six
+import codecs
 from django.db import transaction
 from django.db.models.fields import FieldDoesNotExist
 from django.core.exceptions import ValidationError
@@ -79,7 +81,10 @@ def source(self, source=None, encoding="cp1252"):
         if isinstance(source, io.IOBase):
             self._source = source
         elif isinstance(source, six.string_types) and os.path.exists(source) and source.endswith('csv'):
-            self._source = io.open(source, 'rb')
+            if sys.version_info >= (3,0):
+                self._source = codecs.open(source, 'rb', encoding=encoding)
+            else:
+                self._source = codecs.open(source, 'rb')
         elif isinstance(source, list):
             self._source = source
         elif hasattr(source, 'file_upload'):  # for FileHistory instances
@@ -177,7 +182,7 @@ def clean_field(self, field_name, value):
                 field.clean(value, field)
             except FieldDoesNotExist:
                 pass  # do nothing if not find this field in model
-            except ValidationError as msg:
+            except Exception as msg:
                 default_msg = msg.messages[0].replace('This field', '')
                 new_msg = 'Field ({0!s}) {1!s}'.format(field.name, default_msg)
                 raise ValidationError(new_msg)
@@ -185,7 +190,12 @@ def clean_field(self, field_name, value):
         clean_function = getattr(self, 'clean_{0!s}'.format(field_name), False)
 
         if clean_function:
-            return clean_function(value)
+            try:
+                return clean_function(value)
+            except Exception as msg:
+                default_msg = str(msg).replace('This field', '')
+                new_msg = 'Field ({0!s}) {1!s}'.format(field_name, default_msg)
+                raise ValidationError(new_msg)
         return value
 
     def process_row(self, row, values):
diff --git a/setup.py b/setup.py
index 6d17079..283e21d 100644
--- a/setup.py
+++ b/setup.py
@@ -18,7 +18,7 @@ def readme():
 class PyTest(TestCommand):
     def finalize_options(self):
         TestCommand.finalize_options(self)
-        self.test_args = ['data_importer', 'tests', '--cov=data_importer', '-vrsx', '-x']
+        self.test_args = ['data_importer', 'tests', '--cov=data_importer', '-vrsx']
         self.test_suite = True
 
     def run_tests(self):
@@ -65,7 +65,7 @@ def run_tests(self):
     ],
     version=data_importer.__version__,
     install_requires=install_requires,
-    tests_requires=tests_requires,
+    tests_require=tests_requires,
     cmdclass={'test': PyTest},
     zip_safe=False,
     platforms='any',
diff --git a/tests/test_base.py b/tests/test_base.py
index 7609615..aaac276 100644
--- a/tests/test_base.py
+++ b/tests/test_base.py
@@ -177,7 +177,7 @@ def clean_test(self, value):
         # test get row
         self.assertEqual(importer_error.errors[0][0], 1)
         # test get error type
-        self.assertEqual(importer_error.errors[0][1], 'AttributeError')
+        self.assertEqual(importer_error.errors[0][1], 'ValidationError')
         # test get error message
         self.assertIn('object has no attribute coisa', importer_error.errors[0][2])
 
diff --git a/tests/test_csv_importer.py b/tests/test_csv_importer.py
index 4eae028..64a056a 100644
--- a/tests/test_csv_importer.py
+++ b/tests/test_csv_importer.py
@@ -150,7 +150,7 @@ def clean_test(self, value):
         # test get row
         self.assertEqual(importer_error.errors[0][0], 1)
         # test get error type
-        self.assertEqual(importer_error.errors[0][1], 'AttributeError')
+        self.assertEqual(importer_error.errors[0][1], 'ValidationError')
         # test get error message
         self.assertIn('object has no attribute coisa', importer_error.errors[0][2])
 
diff --git a/tests/test_dict_fields.py b/tests/test_dict_fields.py
index 62dcbb3..4a75b39 100644
--- a/tests/test_dict_fields.py
+++ b/tests/test_dict_fields.py
@@ -64,7 +64,7 @@ def clean_test(self, value):
         # test get row
         self.assertEqual(importer_error.errors[0][0], 1)
         # test get error type
-        self.assertEqual(importer_error.errors[0][1], 'AttributeError')
+        self.assertEqual(importer_error.errors[0][1], 'ValidationError')
         # test get error message
         self.assertIn('object has no attribute coisa', importer_error.errors[0][2])