diff --git a/cache.py b/cache.py
index 4f0126d2..c9f7ab48 100644
--- a/cache.py
+++ b/cache.py
@@ -303,21 +303,21 @@ def changeStation(matches):
         if stationID < 0:
             try:
                 correctName = corrections.systems[systemName]
-                if correction == DELETED:
+                if correctName == DELETED:
                     tdenv.DEBUG1("DELETED: {}", systemName)
-                    stationID = correction
+                    stationID = DELETED
                     return
-                systemName = correction.upper()
+                systemName = correctName.upper()
             except KeyError:
                 pass
             try:
                 key = systemName + "/" + stationName.upper()
-                correction = corrections.stations[key]
-                if correction == DELETED:
+                correctName = corrections.stations[key]
+                if correctName == DELETED:
                     tdenv.DEBUG1("DELETED: {}", key)
-                    stationID = correction
+                    stationID = DELETED
                     return
-                stationName = correction.upper()
+                stationName = correctName.upper()
             except KeyError:
                 pass
             facility = systemName + '/' + stationName
diff --git a/formatting.py b/formatting.py
index ed82acbd..f0b6957d 100644
--- a/formatting.py
+++ b/formatting.py
@@ -121,7 +121,7 @@ def append(self, column, after=None):
         if after:
             for idx, col in enumerate(columns, 1):
                 if col.name == after:
-                    columns.insert(idx, newColumn)
+                    columns.insert(idx, column)
                     return self
         columns.append(column)
         return self
diff --git a/trade.py b/trade.py
index df54e0aa..f711e564 100755
--- a/trade.py
+++ b/trade.py
@@ -31,7 +31,7 @@
 
 from __future__ import absolute_import, with_statement, print_function, division, unicode_literals
 import os
-import commands
+from commands import *
 import tradedb
 
 ######################################################################
diff --git a/tradedb.py b/tradedb.py
index 356f5cbd..44e64c05 100644
--- a/tradedb.py
+++ b/tradedb.py
@@ -485,6 +485,7 @@ def lookupSystemRelaxed(self, key):
                 return place
         except AmbiguityError as e:
             # See if the ambiguity resolves down to a single system.
+            systems = set()
             for candidate in e.anyMatch:
                 if isinstance(candidate, Station):
                     systems.add(candidate.system)