Hi Steffen,

You should have received a license key string with your order confirmation e-mail. You should also have the key listed on your account page at clients' area on our site (if you have registered there). Copy and paste that key into DiagramView.LicenseKey property in form editor, or alternatively call MindFusion.Licensing.LicenseManager.AddLicense(the key) from your application startup code.

The control no longer looks for design-time license keys in the registry - now you don't have to run full installation on every build or development system but just deploy the dll files.

I hope that helps,
Stoyan