Thank you for your answer, René!
I tried the guest account successfully, and I will continue to use it
in order to be acquaint with the programming tools.
On the other hand I am studying the documentation folder, and I want
to understand the technical structures behind all of that. That is why
I intend to do all the updates on a virgin original sim390/MUSIC-SP
download in my Windows 7 starter Netbook, 1 CPU, 1.6 GHtz, 1 GByte.
I try to follow the authors instructions word by word, that is why I am
astonished to meet this kind of elementary ERROR04 in conjunction with
a dataset visible in the $000 library, a result of the guided FTP operation.
I continue to read TFM, and make a new try from scratch :-)
b rgds Markus Loew
Markus Loew