I ve a strange behaviour with my installation. Once I compile the plateform solution and launch the website project to perform an installation.
Numerous cs files are deleted in admin/containers like DropDownActions.ascx.cs etc.
And also portal/_default/skins/xcillion folder is removed which occure and exception.
I can't explain what happens.
I tried with visual studio 2017 with standard user and administrator too
I strictly followed the instruction provided by dnnsoftware website
It become an intricate puzlle