Hello. I have a problem with installation of usb dongle driver. I install BTE-STACK and put CC2540MINI_Doungle in USB slot. Then it shows me the installation driver window, I choose like in manual to install from location ..\BLE-CC254x-1.4.0\Accessories\Drivers\ but it says me that there is an installation problem and I don't know why. Can somebody help to solve this situation?