Ensure ColumnId names are unique. Filter parser calls Columns::getId() which implies that these should be unique.

apps/opencs/model/world/columns.cpp

@@ -265,7 +265,7 @@ namespace CSMWorld
 
             { ColumnId_LevelledList,"Levelled List" },
             { ColumnId_LevelledItemId,"Levelled Item" },
-            { ColumnId_LevelledItemLevel,"Level" },
+            { ColumnId_LevelledItemLevel,"Item Level" },
             { ColumnId_LevelledItemType, "Calculate all levels <= player" },
             { ColumnId_LevelledItemTypeEach, "Select a new item each instance" },
             { ColumnId_LevelledItemChanceNone, "Chance None" },
@@ -281,26 +281,26 @@ namespace CSMWorld
             { ColumnId_InfoCondValue, "Values" },
             { ColumnId_OriginalCell, "Original Cell" },
 
-            { ColumnId_NpcAttributes, "Attributes" },
-            { ColumnId_NpcSkills, "Skills" },
+            { ColumnId_NpcAttributes, "NPC Attributes" },
+            { ColumnId_NpcSkills, "NPC Skill" },
             { ColumnId_UChar, "Value [0..255]" },
-            { ColumnId_NpcMisc, "Misc" },
+            { ColumnId_NpcMisc, "NPC Misc" },
             { ColumnId_NpcLevel, "Level" },
             { ColumnId_NpcFactionID, "Faction ID" },
-            { ColumnId_NpcHealth, "Health" },
+            { ColumnId_NpcHealth, "NPC Health" },
             { ColumnId_NpcMana, "Mana" },
             { ColumnId_NpcFatigue, "Fatigue" },
-            { ColumnId_NpcDisposition, "Disposition" },
+            { ColumnId_NpcDisposition, "NPC Disposition" },
             { ColumnId_NpcReputation, "Reputation" },
-            { ColumnId_NpcRank, "Rank" },
+            { ColumnId_NpcRank, "NPC Rank" },
             { ColumnId_NpcGold, "Gold" },
             { ColumnId_NpcPersistence, "Persistent" },
 
-            { ColumnId_RaceAttributes, "Attributes" },
-            { ColumnId_RaceMaleValue, "Male" },
-            { ColumnId_RaceFemaleValue, "Female" },
+            { ColumnId_RaceAttributes, "Race Attributes" },
+            { ColumnId_RaceMaleValue, "Male Attrib" },
+            { ColumnId_RaceFemaleValue, "Female Attrib" },
             { ColumnId_RaceSkillBonus, "Skill Bonus" },
-            { ColumnId_RaceSkill, "Skills" },
+            { ColumnId_RaceSkill, "Race Skill" },
             { ColumnId_RaceBonus, "Bonus" },
 
             { ColumnId_Interior, "Interior" },