diff --git a/label_studio/project.py b/label_studio/project.py
index 6d93233b6482..4d49290bf203 100644
--- a/label_studio/project.py
+++ b/label_studio/project.py
@@ -528,6 +528,8 @@ def already_exists_error(what, path):
             else:
                 config['ml_backend']['name'] = str(uuid4())
 
+        config['sampling'] = args.sampling
+
         # create config.json
         config_json = 'config.json'
         config_json_path = os.path.join(dir, config_json)
diff --git a/label_studio/server.py b/label_studio/server.py
index 0b591328203c..2129874219de 100644
--- a/label_studio/server.py
+++ b/label_studio/server.py
@@ -550,6 +550,19 @@ def api_completions(task_id):
         return make_response('Incorrect request method', 500)
 
 
+@app.route('/api/tasks/<task_id>/cancel', methods=['POST'])
+@exception_treatment
+def api_tasks_cancel(task_id):
+    project = project_get_or_create()
+    skipped_completion = {
+        'result': [],
+        'skipped': True
+    }
+    completion_id = project.save_completion(task_id, skipped_completion)
+    project.analytics.send(getframeinfo(currentframe()).function)
+    return make_response(json.dumps({'id': completion_id}), 201)
+
+
 @app.route('/api/tasks/<task_id>/completions/<completion_id>/', methods=['DELETE'])
 @exception_treatment
 def api_completion_by_id(task_id, completion_id):
@@ -647,10 +660,11 @@ def main():
         if input_args.init:
             Project.create_project_dir(input_args.project_name, input_args)
 
-        if not os.path.exists(input_args.project_name):
+        if not os.path.exists(Project.get_project_dir(input_args.project_name, input_args)):
             raise FileNotFoundError(
                 'Project directory "{pdir}" not found. '
-                'Did you miss create it first with `label-studio init {pdir}` ?'.format(pdir=input_args.project_name))
+                'Did you miss create it first with `label-studio init {pdir}` ?'.format(
+                    pdir=Project.get_project_dir(input_args.project_name, input_args)))
 
     # On `start` command, launch browser if --no-browser is not specified and start label studio server
     if input_args.command == 'start':
diff --git a/label_studio/static/js/lsb.js b/label_studio/static/js/lsb.js
index b6730bd44836..fa1542389666 100644
--- a/label_studio/static/js/lsb.js
+++ b/label_studio/static/js/lsb.js
@@ -189,6 +189,7 @@ const LSB = function(elid, config, task) {
       "completions:add-new",
       "completions:delete",
       "side-column", // entity
+      "skip"
     ],
 
     onSubmitCompletion: function(ls, c) {
@@ -236,18 +237,22 @@ const LSB = function(elid, config, task) {
     onSkipTask: function(ls, completion) {
       ls.setFlags({ loading: true });
 
-      try {
-        const json = Requests.post(
-          `${API_URL.MAIN}${API_URL.TASKS}/${self.task.id}${API_URL.CANCEL}`,
-          JSON.stringify({ data: JSON.stringify({ error: "cancelled" }) }),
-        );
+      Requests.poster(
+        `${API_URL.MAIN}${API_URL.TASKS}/${ls.task.id}${API_URL.CANCEL}`,
+        JSON.stringify(completion),
+      ).then(function(response) {
+        response.json().then(function (res) {
+          // if (res && res.id) completion.updatePersonalKey(res.id.toString());
 
-        self.resetState();
+          if (task) {
+            ls.setFlags({ isLoading: false });
+          } else {
+            loadNext(ls);
+          }
+        })
+      });
 
-        return loadTask();
-      } catch (err) {
-        console.error("Failed to skip task ", err);
-      }
+      return true;
     },
 
     onGroundTruth: function(ls, c, value) {
diff --git a/label_studio/templates/tasks.html b/label_studio/templates/tasks.html
index 4ad9c9deddb7..455c3f638a7f 100644
--- a/label_studio/templates/tasks.html
+++ b/label_studio/templates/tasks.html
@@ -6,7 +6,7 @@
 
       <!-- Statistics -->
       <div class="ui two column centered grid">
-
+        <div class="row">
         <div class="column center aligned">
           <div class="ui statistic">
             <span class="value">{{ task_ids|length }}</span>
@@ -25,20 +25,25 @@
             {% endif %}
           </div>
         </div>
+        </div>
 
-        <div class="two column center aligned clearing task-buttons">
+        <div class="row">
+          <div class="ui message">
+            <p>Tasks sampling: <span class="ui orange horizontal label">{{ config['sampling'] }}</span> </p>
+          </div>
+        </div>
+
+        <div class="row">
           {% if task_ids|length > 0 %}
             <a class="ui button positive" href="/">Start Labeling</a>
             <a id="clear-tasks-button" class="ui button red">Delete All Tasks</a>
           {% else %}
             <a class="ui button positive" href="/import">Import Tasks</a>
           {% endif %}
-          <br/><br/>
         </div>
 
       </div>
-
-
+      <div class="ui divider hidden"></div>
       <!-- Table -->
       <table>
         <tr>
diff --git a/label_studio/utils/argparser.py b/label_studio/utils/argparser.py
index 8e007db2b323..8e2d61c56c5a 100644
--- a/label_studio/utils/argparser.py
+++ b/label_studio/utils/argparser.py
@@ -64,6 +64,10 @@ def valid_filepath(filepath):
     root_parser.add_argument(
         '--ml-backend-name', dest='ml_backend_name',
         help='Machine learning backend name')
+    root_parser.add_argument(
+        '--sampling', dest='sampling', choices=['sequential', 'uniform'], default='uniform',
+        help='Sampling type that defines tasks order'
+    )
     root_parser.add_argument(
         '-p', '--port', dest='port', default=8200, type=int,
         help='Server port')
diff --git a/requirements.txt b/requirements.txt
index d73098e1d4ec..16ab96ba82f2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,4 +28,4 @@ flask_api>=2.0
 pandas>=0.24.0
 jsonschema>=3.2.0
 xmljson==0.2.0
-label-studio-converter>=0.0.11
+label-studio-converter>=0.0.12
diff --git a/setup.py b/setup.py
index dc49c7ebf9d8..819e548a8ed6 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,7 @@
 import setuptools
 
 # Package version
-version = '0.5.0'
+version = '0.5.1'
 
 # Readme
 with open('README.md', 'r') as f: