Nicolas Goutte

Ok, too bad, I was not sure, but as you have waited since a few weeks I thought you should give a try.

Have you tried to use "Refresh Libraries"? Does it make any difference?

Are you sure you have the correct workspace for your serial number? Is the serial number correctly activated or if you need a dongle, is the dongle really attached and working?

I am not sure but I suppose that the installer makes the Library folder writable due to the library cache files.

I did a quick test in my Mac. I can create a file (from the command line, not from VW) in /Applications. However I cannot do the sampe in C:\Program Files on Windows. That is how both operating systems work. (Being an admin user on Windows, does not mean that unpriviledged programs like VW have admin rights to write files.)

The folder is probably write protected for a standard user.

Thank you

Well, we do see your signature and one part of it displays: "Interiorcad XS 2015"

macOS 10.13 is more picky on signatures of the installer (as every version of macOS in the last years has become more picky each time). Therefore an old installer might not work correctly. That is why I thought you might have luck by copying a complete installation. As for newer version of VW, they install fine on macOS 10.13 (I am currently writing this text from a Mac using macOS 10.13 😉 ). What I meant is that if the article was about VW 2017 and 2018, then the behavior of previous versions is undefined, which is mostly a bad sign.

That is very curious. However I have to call for others to help you, as I have no idea what might be further wrong here.

Then try to delete them again from that "NMAINY" file, save the file to another place (not in a special folder) and then without VW running, replace the old file by the new file in Explorer. Does it work better after that?

Ah OK, if I remember well, there was no caching at that time. I must have misunderstood your case.

Which VW version do you have?

I suppose that by "system folder" you mean where the VW has been installed (what I would call the program folder). In that case, in the resource browser, you have to use "Refresh Libraries", so that VW's caches are again synchronized. (VW does not assume that someone has changed the libraries in the program folder.)