Can you just try the valmars mod without any others. cause the errors in the output.log point to the xui and valmars on yours dont have a xui addition.
NullReferenceException: Object reference not set to an instance of an object
at ItemActionEntryUse.RefreshEnabled () [0x001ed] in <d7c95f421d354b5e851d6f3126817769>:0
at ItemActionEntryUse..ctor (XUiController controller, ItemActionEntryUse+ConsumeType consumeType) [0x00118] in <d7c95f421d354b5e851d6f3126817769>:0
at XUiC_ItemActionList.SetCraftingActionList (XUiC_ItemActionList+ItemActionListTypes _actionListType, XUiController itemController) [0x007f4] in <d7c95f421d354b5e851d6f3126817769>:0
at XUiC_ItemInfoWindow.SetInfo (ItemStack stack, XUiController controller, XUiC_ItemActionList+ItemActionListTypes actionListType) [0x00319] in <d7c95f421d354b5e851d6f3126817769>:0
at XUiC_ItemInfoWindow.SetItemStack (XUiC_ItemStack stack) [0x00080] in <d7c95f421d354b5e851d6f3126817769>:0
at XUiC_ItemInfoWindow.SetItemInfo (XUiC_ItemStack stack) [0x0000f] in <d7c95f421d354b5e851d6f3126817769>:0
at XUiC_ItemStack.HandleItemInspect () [0x00022] in <d7c95f421d354b5e851d6f3126817769>:0
at XUiC_ItemStack.Update (System.Single _dt) [0x0030d] in <d7c95f421d354b5e851d6f3126817769>:0
at XUiController.Update (System.Single _dt) [0x0004f] in <d7c95f421d354b5e851d6f3126817769>:0
at XUiC_Backpack.Update (System.Single _dt) [0x00000] in <d7c95f421d354b5e851d6f3126817769>:0
at XUiController.Update (System.Single _dt) [0x0004f] in <d7c95f421d354b5e851d6f3126817769>:0
at XUiController.Update (System.Single _dt) [0x0004f] in <d7c95f421d354b5e851d6f3126817769>:0
at XUiController.Update (System.Single _dt) [0x0004f] in <d7c95f421d354b5e851d6f3126817769>:0
at XUi.OnUpdateDeltaTime (System.Single updateDeltaTime) [0x0014d] in <d7c95f421d354b5e851d6f3126817769>:0
at XUiUpdater.Update () [0x0003f] in <d7c95f421d354b5e851d6f3126817769>:0
at XUiUpdateHelper.LateUpdate () [0x00000] in <d7c95f421d354b5e851d6f3126817769>:0
(Filename: <d7c95f421d354b5e851d6f3126817769> Line: 0)
ALSO in your items.xml remove the id="####" on all the items you have.