Why wont custom indicators run on my tablet

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I have a MS Surface Pro 3 tablet that I loaded MT4 on. Can log into my account and it runs fine. I copied some custom indicators from my PC to the tablet and placed in the proper indicator folder. I even compiled them again with no errors. But when I place them on a chart and click OK, nothing happens. The indicator screen just hangs. I eventually click the X to close the screen. Does anyone know what the problem is? The indicators run fine on my PC. Both the tablet and my PC are running the same and latest version of MT4.