Hi Bob,
After a (hopefully) well - earned weekend away I have completed the "task" of deleting everything related to the previous installations of SQL Server.
A moment ago I have installed Enterprise again and the installation process was without problems.
The reason for this "excercise" was that SSIS wasn't installed.
Apparently now it is, I have made my first project and that seems to work.
I have to do some more testing but for now I am very happy! 😀
May I thank you for your advise, and guidance. It gave me, as a non - dba, enough confidence to do the job.
Hein