After fixing the "setting" to 20 I now get an error window and if I press START I get it as well:
.NET CF Installation Error
The application falied to load required components. If the .NET Compact Framework is installed on a storage card, please ensure that this card is in place and launch the application again. If this fails, a re-installation of the .NET Compact Framework is recommended. Support info: -2147479552 (80001000)
EDIT: I reinstalled .NET CF 3.5 and I got a different error when running MaxSense, but it runs fine...