I have just bought my Samsung Galaxy Tab Pro 8.4 a month ago and it is great. But i have a big problem and message that it keeps saying "Unfortunately, the process android.process.acore has stopped" I keep pressing ok but it keeps on coming up like every 2 seconds and before i shut down my Galaxy Tab Pro 8.4 there was white background behind the apps on the normal Android home sceens and after i rebooted it up the white background was gone and got changed to my android wallpaper again And i never had this problem on Galaxy Tab Pro and my old Samsung Galaxy Tab 2 7. What does this mean? How to fix this problem? do i have to take it to a repair shop?