I'm not sure if there is a Special procedure how to install this, but it does not work for me.

user:/AddOns/InventoryGridView/util.lua:167: operator .. is not supported for string .. boolean
stack traceback:
user:/AddOns/InventoryGridView/util.lua:167: in function 'util.ReshapeSlots'
|caaaaaa<Locals> scrollList = ud, parent = ud, numControls = 50, gridIconSize = 50, IGVId = 1, isGrid = true </Locals>|r
user:/AddOns/InventoryGridView/adapter.lua:450: in function 'adapter.ScrollController'
|caaaaaa<Locals> self = ud </Locals>|r
EsoUI/Libraries/Utility/ZO_Hook.lua:19: in function 'ZO_ScrollList_UpdateScroll'
user:/AddOns/InventoryGridView/main.lua:47: in function 'onFragmentShowing'
user:/AddOns/InventoryGridView/main.lua:61: in function 'onFragmentStateChange'
|caaaaaa<Locals> oldState = "hidden", newState = "showing", keybindButtonDescriptor = tbl, onFragmentShowing = user:/AddOns/InventoryGridView/main.lua:42, onFragmentHiding = user:/AddOns/InventoryGridView/main.lua:52 </Locals>|r
EsoUI/Libraries/Utility/ZO_CallbackObject.lua:111: in function 'ZO_CallbackObject:FireCallbacks'
|caaaaaa<Locals> self = tbl, eventName = "StateChange", registry = tbl, callbackInfoIndex = 2, callbackInfo = tbl, callback = user:/AddOns/InventoryGridView/main.lua:33, deleted = false </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_SceneFragment.lua:111: in function 'ZO_SceneFragment:SetState'
|caaaaaa<Locals> self = tbl, newState = "showing", oldState = "hidden" </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_SceneFragment.lua:129: in function 'ZO_SceneFragment:ShouldBeShown'
|caaaaaa<Locals> self = tbl </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_SceneFragment.lua:195: in function 'ZO_SceneFragment:Refresh'
|caaaaaa<Locals> self = tbl, asAResultOfSceneStateChange = true, refreshedForScene = tbl, oldState = "hidden" </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_Scene.lua:320: in function 'ZO_Scene:RefreshFragmentsHelper'
|caaaaaa<Locals> self = tbl, asAResultOfSceneStateChange = true, i = 25, fragment = tbl </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_Scene.lua:328: in function 'ZO_Scene:RefreshFragments'
|caaaaaa<Locals> self = tbl, asAResultOfSceneStateChange = true </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_Scene.lua:283: in function 'ZO_Scene:SetState'
|caaaaaa<Locals> self = tbl, newState = "showing", oldState = "hidden", AS_A_RESULT_OF_SCENE_STATE_CHANGE = true </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_SceneManager_Base.lua:161: in function 'ZO_SceneManager_Base:ShowScene'
|caaaaaa<Locals> self = tbl, scene = tbl, sequenceNumber = 1 </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_SceneManager_Leader.lua:282: in function 'ZO_SceneManager_Leader:ShowScene'
|caaaaaa<Locals> self = tbl, scene = tbl </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_SceneManager_Leader.lua:265: in function 'ZO_SceneManager_Leader:Show'
|caaaaaa<Locals> self = tbl, sceneName = "hudui", nextSceneClearsSceneStack = true, numScenesNextScenePops = 0, nextScene = tbl </Locals>|r
EsoUI/Libraries/ZO_Scene/ZO_SceneManager_Base.lua:176: in function 'ZO_SceneManager_Base:ShowBaseScene'
|caaaaaa<Locals> self = tbl </Locals>|r
EsoUI/Ingame/Scenes/IngameSceneManager.lua:268: in function 'ZO_IngameSceneManager:OnLoadingScreenDropped'
|caaaaaa<Locals> self = tbl </Locals>|r
EsoUI/Ingame/Scenes/IngameSceneManager.lua:30: in function '(anonymous)'