I get this error when trying to setup a template to import a excel sheet in Mendix 2.5.2.1. I have tried alot of different sheets from different locations. It happened after we upgraded from 2.5.1.1. to 2.5.2.1. The Error: "Object with the following id couldn't be retrieved: '[MendixIdentifier:: guid=281861523767374 objectType=ExcelImporter.TemplateDocument objectTypeHash=90 dataStoreCode=1 objectStoreId=78]'"