What causes a workflow to fail? I have a task that failed when the user saved the information. The workflow errored out and cancelled. The user's permission was never changed as they do have contribute rights. They have been working on these tasks for awhile now so I was surprised to see the workflow fail when they saved the item. Below is what I found in the ULS log but I am not sure why it says Item does not exist.
System.Exception: Cannot find item with id 0 in list 'CC Verification Tracker'. Check the user has at least read permissions. System.ArgumentException: Item does not exist. It may have been deleted by another user.
at Microsoft.SharePoint.SPList.GetItemById(String strId, Int3...
