I installed DVD Architect 7 along with Vegas MS Plat 14. All went well including activation & registration. While working with the Make Disc / BluRay with Menu option in Vegas it returned the msg "DVDARC not installed." But it was installed (other Make Disc options worked OK.)
Online search revealed an updated version Bld 67 available to download to replace v7 Bld 54. Once installed, it brought up the Activation box with the Serial # and email address already in the prompt fields. However getting past that fails, after attempting numerous times, with or without the Firewall active, to establish an online connection. (I am certainly online as I write this on the same laptop PC.) There's no reason for this error message as I do have a good connection and all other apps have no issue.
The PC is a Dell Inspiron 17-5000 running Windows 10. The earlier version of DVD Arch had no issue with the internet connection.