I think I found the answer myself when I put this in the RootComponent updateRoot: anHtmlRoot     super updateRoot: anHtmlRoot.     anHtmlRoot stylesheet url: (PaintingLibrary  urlOf: #mainCss) and this on the class side of the RootComponent initialize     | app |     app := WAAdmin         register: #stRootComponent         asApplicationAt: 'Paintings2'.     app addLibrary: PaintingLibrary then I see some css. The page looks not what I expect but that can be changed. So does the code I have now on my github page well or do I use the components still the wrong way ? Roelof Op 5-1-2020 om 12:48 schreef Roelof Wobben:

Op 5-1-2020 om 11:36 schreef Roelof Wobben via Pharo-users:

hmm,

It looks like I had to do it like this : https://github.com/RoelofWobben/paintings for registering the project but I see then that the rootcomponent is not changed and that still the css is not found or used.

So please help.

Roelof