
The "Converting to 2017.1" topic states:
For licensing, you will have to update your licenses.licx file to reference this legacy assembly. Change the Grids line start to read [...]
And I added the following line:
ActiproSoftware.Products.PropertyGrid.PropertyGridLicenseToken, ActiproSoftware.PropertyGrid.Legacy.Wpf, Version=17.1.651.0, Culture=neutral, PublicKeyToken=36ff2196ab5654b9
But this gives me "error LC0003: Unable to resolve type 'ActiproSoftware.Products.PropertyGrid.PropertyGridLicenseToken, ActiproSoftware.PropertyGrid.Legacy.Wpf, Version=17.1.651.0, Culture=neutral, PublicKeyToken=36ff2196ab5654b9'" on compile time.