diff --git a/openlp/plugins/presentations/lib/impresscontroller.py b/openlp/plugins/presentations/lib/impresscontroller.py
index d231acb05..1db6b9e68 100644
--- a/openlp/plugins/presentations/lib/impresscontroller.py
+++ b/openlp/plugins/presentations/lib/impresscontroller.py
@@ -46,6 +46,7 @@ from openlp.plugins.presentations.lib.presentationcontroller import Presentation
 if is_win():
     from win32com.client import Dispatch
     import pywintypes
+    uno_available = False
     # Declare an empty exception to match the exception imported from UNO
 
     class ErrorCodeIOException(Exception):
diff --git a/scripts/appveyor.yml b/scripts/appveyor.yml
index 43f14e69d..3187a7b9f 100644
--- a/scripts/appveyor.yml
+++ b/scripts/appveyor.yml
@@ -1,5 +1,8 @@
 version: OpenLP-win-ci-b{build}
 
+image:
+  - Visual Studio 2017
+
 clone_script:
   - curl -L https://bazaar.launchpad.net/BRANCHPATH/tarball -o sourcecode.tar.gz
   - 7z e sourcecode.tar.gz
@@ -11,7 +14,7 @@ environment:
 
 install:
   # Install dependencies from pypi
-  - "%PYTHON%\\python.exe -m pip install sqlalchemy alembic appdirs chardet beautifulsoup4 lxml Mako mysql-connector-python nose mock pyodbc psycopg2 pypiwin32 websockets asyncio waitress six webob requests QtAwesome PyQt5 pymediainfo"
+  - "%PYTHON%\\python.exe -m pip install sqlalchemy alembic appdirs chardet beautifulsoup4 lxml Mako mysql-connector-python pytest mock pyodbc psycopg2 pypiwin32 websockets asyncio waitress six webob requests QtAwesome PyQt5 pymediainfo"
   # Download and unpack mupdf
   - appveyor DownloadFile https://mupdf.com/downloads/archive/mupdf-1.14.0-windows.zip
   - 7z x mupdf-1.14.0-windows.zip
@@ -27,7 +30,7 @@ build: off
 test_script:
   - cd openlp-branch
   # Run the tests
-  - "%PYTHON%\\python.exe -m nose -v tests"
+  - "%PYTHON%\\python.exe -m pytest -v tests"
   # Go back to the user root folder
   - cd..
 
diff --git a/tests/functional/openlp_core/api/test_deploy.py b/tests/functional/openlp_core/api/test_deploy.py
index 784605034..75fc62cfb 100644
--- a/tests/functional/openlp_core/api/test_deploy.py
+++ b/tests/functional/openlp_core/api/test_deploy.py
@@ -15,13 +15,12 @@
 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for    #
 # more details.                                                               #
 #                                                                             #
-
-
-# Temple Place, Suite 330, Boston, MA 02111-1307 USA                          #
-###############################################################################
-from tempfile import mkdtemp
 # You should have received a copy of the GNU General Public License along     #
 # with this program; if not, write to the Free Software Foundation, Inc., 59  #
+# Temple Place, Suite 330, Boston, MA 02111-1307 USA                          #
+###############################################################################
+import os
+from tempfile import mkdtemp
 from unittest import TestCase
 from unittest.mock import MagicMock, patch
 
@@ -57,14 +56,15 @@ class TestRemoteDeploy(TestCase):
         # GIVEN: A new downloaded zip file
         mocked_zipfile = MagicMock()
         MockZipFile.return_value = mocked_zipfile
-        root_path = Path('/tmp/remotes')
+        root_path_str = '{sep}tmp{sep}remotes'.format(sep=os.sep)
+        root_path = Path(root_path_str)
 
         # WHEN: deploy_zipfile() is called
         deploy_zipfile(root_path, 'site.zip')
 
         # THEN: the zip file should have been extracted to the right location
-        MockZipFile.assert_called_once_with('/tmp/remotes/site.zip')
-        mocked_zipfile.extractall.assert_called_once_with('/tmp/remotes')
+        MockZipFile.assert_called_once_with(root_path_str + os.sep + 'site.zip')
+        mocked_zipfile.extractall.assert_called_once_with(root_path_str)
 
     @patch('openlp.core.api.deploy.Registry')
     @patch('openlp.core.api.deploy.get_web_page')
diff --git a/tests/functional/openlp_core/common/test_path.py b/tests/functional/openlp_core/common/test_path.py
index 7c0a34635..8695b58f1 100644
--- a/tests/functional/openlp_core/common/test_path.py
+++ b/tests/functional/openlp_core/common/test_path.py
@@ -324,7 +324,7 @@ class TestPath(TestCase):
         obj = path.json_object(extra=1, args=2)
 
         # THEN: A JSON decodable object should have been returned.
-        assert obj == {'__Path__': ('/', 'base', 'path', 'to', 'fi.le')}
+        assert obj == {'__Path__': (os.sep, 'base', 'path', 'to', 'fi.le')}
 
     def test_path_json_object_base_path(self):
         """
diff --git a/tests/utils/test_bzr_tags.py b/tests/utils/test_bzr_tags.py
index e6c00f707..cd057ada4 100644
--- a/tests/utils/test_bzr_tags.py
+++ b/tests/utils/test_bzr_tags.py
@@ -24,7 +24,7 @@ Package to test for proper bzr tags.
 """
 import os
 from subprocess import PIPE, Popen
-from unittest import TestCase
+from unittest import TestCase, SkipTest
 
 
 TAGS1 = {'1.9.0', '1.9.1', '1.9.2', '1.9.3', '1.9.4', '1.9.5', '1.9.6', '1.9.7', '1.9.8', '1.9.9', '1.9.10',
@@ -42,7 +42,10 @@ class TestBzrTags(TestCase):
         path = os.path.dirname(__file__)
 
         # WHEN getting the branches tags
-        bzr = Popen(('bzr', 'tags', '--directory=' + path), stdout=PIPE)
+        try:
+            bzr = Popen(('bzr', 'tags', '--directory=' + path), stdout=PIPE)
+        except:
+            raise SkipTest('bzr is not installed')
         std_out = bzr.communicate()[0]
         count = len(TAGS1)
         tags = [line.decode('utf-8').split()[0] for line in std_out.splitlines()]