diff --git a/allzweckmesser/features.py b/allzweckmesser/features.py
index 8e765d8c2d88562e71d85d60594d50a1c10e5072..3c7fb8b71d072fe84cc20710b7a4d9ad5141b7f5 100644
--- a/allzweckmesser/features.py
+++ b/allzweckmesser/features.py
@@ -29,16 +29,17 @@ class CombinedFeatures(Enum):
 
 def combine_features(reading_features, reading_meter_features):
     features = [0 for _ in CombinedFeatures]
-    for rf, val in reading_features:
+    for rf, val in reading_features.items():
         if hasattr(CombinedFeatures, rf.name):
             features[CombinedFeatures[rf.name].value] = val
 
     meter_rules_violated = 0
-    for rmf, val in reading_meter_features:
+    for rmf, val in reading_meter_features.items():
         if hasattr(CombinedFeatures, rmf.name):
             features[CombinedFeatures[rmf.name].value] = val
         elif 'VIOLATED' in rmf.name.upper():
             meter_rules_violated += 1
-    features[CombinedFeatures.METER_RULES_VIOLATED] = meter_rules_violated
+    features[
+        CombinedFeatures.METER_RULES_VIOLATED.value] = meter_rules_violated
 
     return features
diff --git a/allzweckmesser/meters.py b/allzweckmesser/meters.py
index 31b1298b9732d8c171321dde04ebb3ca0c0f57ff..92e756aa4a725ccb83f839161c9fc48e9db65323 100644
--- a/allzweckmesser/meters.py
+++ b/allzweckmesser/meters.py
@@ -12,7 +12,7 @@ def bridge(position_spec, feature):
     def get_feature(meter: Meter, reading: Reading):
         position = Position.after(position_spec[0], reading, meter,
                                   position_spec[1])
-        if position.word_boundary:
+        if position and position.word_boundary:
             return None
         else:
             return feature
diff --git a/scripts/create_feature_vectors.py b/scripts/create_feature_vectors.py
index 43661d9a4f427ff0b0143d94b86e1ef66d1cf1d5..3d5528fdc5f29680a00941a0482bf7650178416c 100644
--- a/scripts/create_feature_vectors.py
+++ b/scripts/create_feature_vectors.py
@@ -17,11 +17,14 @@ def main(meter_reference_verses, outfile, meters=['hexameter']):
         for meter in meters
         if meter in azm.meters.ALL_METERS
     ]
-    scanner = azm.scanner.Scanner(meters=meters)
+    scanner = azm.scanner.Scanner()
     out = []
 
-    for ref_meter, ref_verse, correct in meter_reference_verses:
+    total_instances = len(meter_reference_verses)
+    for i, (ref_meter, ref_verse, correct) in enumerate(meter_reference_verses, 1):
         if correct:
+            print('Processing verse {} ({}/{})'
+                  .format(ref_verse.text, i, total_instances))
             instances = []
             ref_reading = ref_verse.readings[0]
             ref_schema = ref_reading.get_schema()
@@ -31,6 +34,7 @@ def main(meter_reference_verses, outfile, meters=['hexameter']):
                 print('ERROR when scanning verse {!r}'.format(ref_verse),
                       file=sys.stderr)
                 traceback.print_exc()
+                continue
             reading_meter_combinations = (
                 azm.meters.get_reading_meter_combinations(
                     analysis.readings, meters