System.FormatException: Index (zero based) must be greater than or equal to zero and less than the size of the argument list.
  at System.String.FormatHelper (System.Text.StringBuilder result, IFormatProvider provider, System.String format, System.Object[] args) [0x000e8] in /Users/builduser/buildslave/mono/build/mcs/class/corlib/System/String.cs:1925
  at System.String.Format (IFormatProvider provider, System.String format, System.Object[] args) [0x00000] in /Users/builduser/buildslave/mono/build/mcs/class/corlib/System/String.cs:1873
  at System.String.Format (System.String format, System.Object[] args) [0x00000] in /Users/builduser/buildslave/mono/build/mcs/class/corlib/System/String.cs:1868
  at SkillSlotController.GetSpellDescription (Cards.Model.SpellInfo spell, System.String value) [0x002ca] in C:\Users\i7-4770k\Documents\Cards\CardGame\Assets\Scripts\UI\SmallElements\SkillSlotController.cs:259
UnityEngine.Debug:LogError(Object)
SkillSlotController:GetSpellDescription(SpellInfo, String) (at Assets/Scripts/UI/SmallElements/SkillSlotController.cs:263)
SkillSlotController:SetAbility(SpellInfo) (at Assets/Scripts/UI/SmallElements/SkillSlotController.cs:190)
Cards.UI.UpgradeCardPanel:OnUpdateInfo(Object[]) (at Assets/Scripts/UI/WindowsAndPanels/UpgradeCardPanel.cs:220)
UpdatableBaseWindow:UpdateInfo(Object[]) (at Assets/Scripts/UI/WindowsAndPanels/UpdatableBaseWindow.cs:12)
WindowsManager:ShowWindow(Object, Object) (at Assets/Scripts/UI/WindowsAndPanels/WindowsManager.cs:214)
Cards.UI.CollectionCardsPanel:Update() (at Assets/Scripts/UI/CollectionCardsPanel/CollectionCardsPanel.cs:386)