first of all thanks for all answers I will re instal a full fresh Pharo9 a test again but 2 questions
prefered VM to use ? Stable Lastest Threaded ? How to send big file crash ? cheers NB I am retired coder with some middle level with gtk on other language but difficult to me to change my old brain model to connect with Pharo one with so many classes and method even if I have tried some mooc ;-)