I've followed the "NET Developer Tutorial 5-0.pdf" up through page 21 - the part where I upload Archive.zip to Apprenda. This is what happen and I don't know how to proceed.
Item: services\CalculatorService, Message: Each service directory may only contain one .NET configuration file, with a matching dll. (e.g. 'MyService'/'MyService.dll.config') but 2 were found.
The issue is from left behind dll and config file. Your service is called CalculatorService but you still have a Service.dll and a service.dll.config. Simply remove those two files and you should be good to go.