diff --git a/cps.py b/cps.py
index 737b0d97..46eb1440 100755
--- a/cps.py
+++ b/cps.py
@@ -70,7 +70,6 @@ def main():
     app.register_blueprint(shelf)
     app.register_blueprint(admi)
     app.register_blueprint(remotelogin)
-    # if config.config_use_google_drive:
     app.register_blueprint(gdrive)
     app.register_blueprint(editbook)
     if kobo_available:
diff --git a/cps/__init__.py b/cps/__init__.py
index 9b004640..3b100907 100644
--- a/cps/__init__.py
+++ b/cps/__init__.py
@@ -37,6 +37,11 @@ from . import config_sql, logger, cache_buster, cli, ub, db
 from .reverseproxy import ReverseProxied
 from .server import WebServer
 
+try:
+    import lxml
+    lxml_present = True
+except ImportError:
+    lxml_present = False
 
 mimetypes.init()
 mimetypes.add_type('application/xhtml+xml', '.xhtml')
@@ -90,6 +95,16 @@ db.CalibreDB.setup_db(config.config_calibre_dir, cli.settingspath)
 calibre_db = db.CalibreDB()
 
 def create_app():
+    if sys.version_info < (3, 0):
+        log.info(
+            '*** Python2 is EOL since end of 2019, this version of Calibre-Web is no longer supporting Python2, please update your installation to Python3 ***')
+        print(
+            '*** Python2 is EOL since end of 2019, this version of Calibre-Web is no longer supporting Python2, please update your installation to Python3 ***')
+        sys.exit(5)
+    if not lxml_present:
+        log.info('*** "lxml" is needed for calibre-web to run. Please install it using pip: "pip install lxml" ***')
+        print('*** "lxml" is needed for calibre-web to run. Please install it using pip: "pip install lxml" ***')
+        sys.exit(6)
     app.wsgi_app = ReverseProxied(app.wsgi_app)
     # For python2 convert path to unicode
     if sys.version_info < (3, 0):
@@ -99,12 +114,8 @@ def create_app():
 
     if os.environ.get('FLASK_DEBUG'):
         cache_buster.init_cache_busting(app)
-
     log.info('Starting Calibre Web...')
-    if sys.version_info < (3, 0):
-        log.info('*** Python2 is EOL since end of 2019, this version of Calibre-Web is no longer supporting Python2, please update your installation to Python3 ***')
-        print('*** Python2 is EOL since end of 2019, this version of Calibre-Web is no longer supporting Python2, please update your installation to Python3 ***')
-        sys.exit(5)
+
     Principal(app)
     lm.init_app(app)
     app.secret_key = os.getenv('SECRET_KEY', config_sql.get_flask_session_key(ub.session))
diff --git a/cps/editbooks.py b/cps/editbooks.py
index afc07513..d8e16e4c 100644
--- a/cps/editbooks.py
+++ b/cps/editbooks.py
@@ -26,7 +26,11 @@ from datetime import datetime
 import json
 from shutil import copyfile
 from uuid import uuid4
-from lxml.html.clean import clean_html
+try:
+    from lxml.html.clean import clean_html
+except ImportError:
+    pass
+
 
 # Improve this to check if scholarly is available in a global way, like other pythonic libraries
 try:
diff --git a/cps/helper.py b/cps/helper.py
index b6ea6760..8c0f1656 100644
--- a/cps/helper.py
+++ b/cps/helper.py
@@ -38,6 +38,7 @@ from flask_login import current_user
 from sqlalchemy.sql.expression import true, false, and_, text, func
 from werkzeug.datastructures import Headers
 from werkzeug.security import generate_password_hash
+from markupsafe import escape
 
 try:
     from urllib.parse import quote
@@ -97,10 +98,11 @@ def convert_book_format(book_id, calibrepath, old_book_format, new_book_format,
         settings['body'] = _(u'This e-mail has been sent via Calibre-Web.')
     else:
         settings = dict()
-    txt = (u"%s -> %s: %s" % (
+    link = '<a href="{}">{}</a>"'.format(url_for('web.show_book', book_id=book.id), escape(book.title))  # prevent xss
+    txt = u"{} -> {}: {}".format(
            old_book_format,
            new_book_format,
-           "<a href=\"" + url_for('web.show_book', book_id=book.id) + "\">" + book.title + "</a>"))
+           link)
     settings['old_book_format'] = old_book_format
     settings['new_book_format'] = new_book_format
     WorkerThread.add(user_id, TaskConvert(file_path, book.id, txt, settings, kindle_mail, user_id))
@@ -778,7 +780,7 @@ def render_task_status(tasklist):
 
             ret['taskMessage'] = "{}: {}".format(_(task.name), task.message)
             ret['progress'] = "{} %".format(int(task.progress * 100))
-            ret['user'] = user
+            ret['user'] = escape(user)  # prevent xss
             renderedtasklist.append(ret)
 
     return renderedtasklist
diff --git a/cps/jinjia.py b/cps/jinjia.py
index 2d18c6f0..554bc791 100644
--- a/cps/jinjia.py
+++ b/cps/jinjia.py
@@ -28,7 +28,6 @@ import mimetypes
 from uuid import uuid4
 
 from babel.dates import format_date
-from flask_babel import gettext as _
 from flask import Blueprint, request, url_for
 from flask_babel import get_locale
 from flask_login import current_user
diff --git a/cps/static/js/main.js b/cps/static/js/main.js
index fe8b498d..d8641c3e 100644
--- a/cps/static/js/main.js
+++ b/cps/static/js/main.js
@@ -20,6 +20,15 @@ function getPath() {
     var jsFileLocation = $("script[src*=jquery]").attr("src");  // the js file path
     return jsFileLocation.substr(0, jsFileLocation.search("/static/js/libs/jquery.min.js"));  // the js folder path
 }
+
+function elementSorter(a, b) {
+    a = +a.slice(0, -2);
+    b = +b.slice(0, -2);
+    if (a > b) return 1;
+    if (a < b) return -1;
+    return 0;
+}
+
 // Generic control/related handler to show/hide fields based on a checkbox' value
 // e.g.
 //  <input type="checkbox" data-control="stuff-to-show">
@@ -714,3 +723,4 @@ $(function() {
         });
     });
 });
+
diff --git a/cps/static/js/table.js b/cps/static/js/table.js
index 9d5c4fa7..60d1a957 100644
--- a/cps/static/js/table.js
+++ b/cps/static/js/table.js
@@ -22,6 +22,26 @@ var selections = [];
 var reload = false;
 
 $(function() {
+    $('#tasktable').bootstrapTable({
+        formatNoMatches: function () {
+            return '';
+        },
+        striped: true
+    });
+    if ($('#tasktable').length) {
+        setInterval(function () {
+            $.ajax({
+                method: "get",
+                url: getPath() + "/ajax/emailstat",
+                async: true,
+                timeout: 900,
+                success: function (data) {
+                    $('#table').bootstrapTable("load", data);
+                }
+            });
+        }, 2000);
+    }
+
     $("#books-table").on("check.bs.table check-all.bs.table uncheck.bs.table uncheck-all.bs.table",
         function (e, rowsAfter, rowsBefore) {
             var rows = rowsAfter;
diff --git a/cps/templates/tasks.html b/cps/templates/tasks.html
index 4a755c82..76f23dfe 100644
--- a/cps/templates/tasks.html
+++ b/cps/templates/tasks.html
@@ -5,7 +5,7 @@
 {% block body %}
 <div class="discover">
     <h2>{{_('Tasks')}}</h2>
-    <table class="table table-no-bordered" id="table" data-url="{{  url_for('web.get_email_status_json') }}"  data-sort-name="starttime" data-sort-order="asc">
+    <table class="table table-no-bordered" id="tasktable" data-url="{{  url_for('web.get_email_status_json') }}"  data-sort-name="starttime" data-sort-order="asc">
       <thead>
         <tr>
             {% if g.user.role_admin() %}
@@ -27,32 +27,9 @@
 {% endblock %}
 {% block js %}
 <script src="{{ url_for('static', filename='js/libs/bootstrap-table/bootstrap-table.min.js') }}"></script>
-        <script>
-            // ToDo: Move to js file
-            $('#table').bootstrapTable({
-               formatNoMatches: function () {
-                return '';
-                },
-                striped: true
-            });
-            setInterval(function() {
-                $.ajax({
-                    method:"get",
-                    url: "{{ url_for('web.get_email_status_json')}}",
-                    async: true,
-                    timeout: 900,
-                    success:function(data){
-                    $('#table').bootstrapTable("load", data);
-                }
-                });
-            }, 1000);
-            function elementSorter(a, b) {
-                a = +a.slice(0, -2);
-                b = +b.slice(0, -2);
-                if (a > b) return 1;
-                if (a < b) return -1;
-                return 0;
-            }
-        </script>
+<script src="{{ url_for('static', filename='js/table.js') }}"></script>
+<script>
+    // ToDo: Move to js file
+</script>
 
 {% endblock %}
diff --git a/cps/web.py b/cps/web.py
index f7291e0a..bf95be50 100644
--- a/cps/web.py
+++ b/cps/web.py
@@ -84,7 +84,7 @@ except ImportError:
 
 @app.after_request
 def add_security_headers(resp):
-    # resp.headers['Content-Security-Policy']= "script-src 'self' https://www.googleapis.com https://api.douban.com https://comicvine.gamespot.com;"
+    resp.headers['Content-Security-Policy']= "script-src 'self'" # https://www.googleapis.com https://api.douban.com https://comicvine.gamespot.com;"
     resp.headers['X-Content-Type-Options'] = 'nosniff'
     resp.headers['X-Frame-Options'] = 'SAMEORIGIN'
     resp.headers['X-XSS-Protection'] = '1; mode=block'