Hi everybody. I am using NS 12 V6.00 touch screen an NS designer 6.02. Strange think is , when I put an Push button switch on a screen , everythibk is is perfect. All the error checks giving no errors. During the simulation , push buttons and level meters are working perfect. When I load it to the NS 12 screen , level meters and push buttons are suddenly disappears. Last year , I begun the project with NS designer 5.0. This year I made some modifications with ver 6.02 , and abnormalities appeared. I loaded some screens with ver 5.0 also. But problem is still same. I also reloaded the operating system of NS screen. (Vers 6.00). Could some one has an idea ?