case GTK_RESPONSE_ACCEPT:
case GTK_RESPONSE_OK:
dir = gtk_dir_selection_get_dir (file_selector);
+ if(!dir || strlen(dir) ==0){
+ gtk_widget_destroy((GtkWidget*)file_selector);
+ break;
+ }
trace = ltt_trace_open(dir);
if(trace == NULL) g_critical("cannot open trace %s", dir);
trace_v = lttv_trace_new(trace);