About Issue #1946 just closed yesterday, I want reOpen because I think there is bug finally, or something to improve :

void setup() { size(300,300 ) ; }
void draw() { }

void mousePressed()
{
//OK open the file
//open("/Users/stanislasmarcais/Desktop/CODE/Fonction Processing/INTERFACE_AFFICHAGE/SauvegardeChargement/OpenApp/data/target.app") ;

//Nothing happen, a bug ?
//open("target.app") ;

//bad path, may be need a message error
//open("/Users/bad_path/bad_path/bad_path/bad_path/bad_path/bad_path/bad_path/bad_path/target.app") ;

//bad name, may be need a message error
open("/good_pathh/good_pathh/good_pathh/good_pathh/good_pathh/good_pathh/bad_name.app") ;
}