Hello again. Thanks for providing more info. Unfortunately, none of that is the info I am asking for. The spreadsheet itself and the config file shouldn't have anything to do with this error. You reported the error as starting with:
Cannot load config :
The loading of the config file (or data) is where the problem is. I need to see the query that is loading the config info. You might need to capture it with SQL Server Profiler or Extended Events.