>> I'm not sure what you mean. Extract the installation files and start setup...or ?
I meant that my Atrium Core “setup”“ file which is also the installer might be corrupted. That’s what I think at least.
>> before remove again the installation and the db(s)
are you asking me to format the entire system again including the DB?
What Marek meant is to unzip your installer and start fresh Atrium Core Installation.
Before starting installation, cleanup atrium core forms and objects reference from your database.