Komplete 10 Ultimate not working in Cubase 7.5.3

Hi is there anyone here who has Komplete 10U and has the same problem like i do in Cubase 7.5.3 ? After i installed the software and activated it on Ni Service Center, i opened Cubase but in VST list there is no Komplete Ultimate to choose. Can anyone help me with an advice or info ?!
10x a lot.