diff --git a/web/run.py b/web/run.py
index b57466f..2a17f41 100755
--- a/web/run.py
+++ b/web/run.py
@@ -49,7 +49,7 @@ FILE_DATE_FMT = "%Y-%m-%dT%H:%M:%S"
 
 log = logging.getLogger("HelioPropa")
 log.setLevel(logging.DEBUG)
-# log.setLevel(logging.WARN)                         # <-- set log level here !
+# log.setLevel(logging.ERROR)                        # <-- set log level here !
 logHandler = logging.FileHandler(get_path('run.log'))
 logHandler.setFormatter(logging.Formatter(
     "%(asctime)s - %(levelname)s - %(message)s"
@@ -161,6 +161,7 @@ def render_view(view, context=None):
 #         dict(tpl_global_vars.items() + context.items())
 #     )
 
+
 def datetime_from_list(time_list):
     """
     Datetimes in retrieved CDFs are stored as lists of numbers,
@@ -212,7 +213,7 @@ def retrieve_data(orbiter, what, started_at, stopped_at):
                 raise Exception("API says there's no dataset at '%s'." % url)
             if remote_gzip_files == 'ERROR':
                 raise Exception("API returned an error at '%s'." % url)
-            if remote_gzip_files == ['OUTOFTIME']:
+            if remote_gzip_files == ['OUTOFTIME']:  # it happens
                 raise Exception("API says it's out of time at '%s'." % url)
             success = True
         except Exception as e:
@@ -229,16 +230,15 @@ def retrieve_data(orbiter, what, started_at, stopped_at):
 
     log.debug("Fetched remote gzip files list : %s." % str(remote_gzip_files))
 
-    # retriever = urllib.URLopener()  # would we need to do this every time ?
     local_gzip_files = []
     for remote_gzip_file in remote_gzip_files:
-        if remote_gzip_file == 'OUTOFTIME':
-            continue
-        # hotfix removeme @Myriam
+        # hotfixes to remove when fixed upstream @Myriam
+        if remote_gzip_file in ['OUTOFTIME', 'ERROR']:
+            continue  # sometimes half the response is okay, the other not
         if remote_gzip_file.endswith('/.gz'):
             continue
         remote_gzip_file = remote_gzip_file.replace('cdpp1', 'cdpp', 1)
-        #########################
+        ################################################
         filename = "%s_%s" % (orbiter, str(remote_gzip_file).split('/')[-1])
         local_gzip_file = get_path("../cache/%s" % filename)
         local_gzip_files.append(local_gzip_file)
@@ -272,8 +272,9 @@ def generate_csv_contents(source_config, started_at, stopped_at):
     # @todo iterate on models when there are many
     try:
         model_slug = source_config['models'][0]['slug']
-    except:
-        abort(500, "Invalid model configuration for '%s'." % source_config['slug'])
+    except Exception as e:
+        abort(500, "Invalid model configuration for '%s' : %s"
+                   % (source_config['slug'], str(e)))
 
     # Grab the list of netCDF files from Myriam's API
     # http://cdpp.irap.omp.eu/BASE/DDService/getDataUrl.php?dataSet=jupiter_orb_all&StartTime=2014-02-23T10:00:10&StopTime=2017-02-24T23:59:00
@@ -295,7 +296,8 @@ def generate_csv_contents(source_config, started_at, stopped_at):
     precision = "%Y-%m-%dT%H"  # model and orbits times are equal-ish
     orbits_data = {}  # keys are datetime as str, values arrays of XY
     for orbits_file in orbits_files:
-        log.debug("%s: opening orbit NETCDF4 '%s'..." % (source_config['name'], orbits_file))
+        log.debug("%s: opening orbit NETCDF4 '%s'..." %
+                  (source_config['name'], orbits_file))
         cdf_handle = Dataset(orbits_file, "r", format="NETCDF4")
         times = cdf_handle.variables['Time']  # YYYY DOY HH MM SS .ms
         data_hci = cdf_handle.variables['HCI']
@@ -370,9 +372,11 @@ def generate_csv_file_if_needed(target_config, started_at, stopped_at):
 
 def remove_files_created_before(date, in_directory):
     """
-    Will throw if something horrible happens, like invalid parameters.
+    Will throw if something horrible happens.
+    Does not remove recursively (could be done with os.walk if needed).
+    Does not remove directories either.
     :param date: datetime object
-    :param in_directory:
+    :param in_directory: absolute path to directory
     :return:
     """
     import os
@@ -380,22 +384,32 @@ def remove_files_created_before(date, in_directory):
 
     secs = time.mktime(date.timetuple())
 
-    if not isdir(in_directory):
-        raise ValueError("Directory to clean '%s' does not exist.")
+    if not os.path.isdir(in_directory):
+        raise ValueError("No directory to clean at '%s'.")
 
     removed_files = []
     for file_name in os.listdir(in_directory):
         file_path = os.path.join(in_directory, file_name)
-        if not os.path.isfile(file_path):
-            continue
-        t = os.stat(file_path)
-        if t.st_ctime < secs:
-            removed_files.append(file_path)
-            os.remove(file_path)
+        if os.path.isfile(file_path):
+            t = os.stat(file_path)
+            if t.st_ctime < secs:
+                os.remove(file_path)
+                removed_files.append(file_path)
 
     return removed_files
 
 
+def get_hit_counter():
+    hit_count_path = get_path("../VISITS")
+
+    if isfile(hit_count_path):
+        hit_count = int(open(hit_count_path).read())
+    else:
+        hit_count = 1
+
+    return hit_count
+
+
 def increment_hit_counter():
     hit_count_path = get_path("../VISITS")
 
@@ -412,6 +426,9 @@ def increment_hit_counter():
     return hit_count
 
 
+tpl_global_vars['visits'] = get_hit_counter()
+
+
 # ROUTING #####################################################################
 
 @app.route('/favicon.ico')
@@ -426,12 +443,13 @@ def favicon():
 @app.route("/home.html")
 @app.route("/index.html")
 def home():
+    increment_hit_counter()
     return render_view('home.html.jinja2', {
         'targets': config['targets'],
         'planets': [s for s in config['targets'] if s['type'] == 'planet'],
         'probes':  [s for s in config['targets'] if s['type'] == 'probe'],
         'comets':  [s for s in config['targets'] if s['type'] == 'comet'],
-        'visits':  increment_hit_counter(),
+        'visits':  get_hit_counter(),
     })
 
 
--
libgit2 0.21.2