Cubase do not recognize my Sound Driver

Every once in a while Cubase Refuse to recognize my Sound Driver…
im using Roland Duo-Capture EX and other programs and features do recognize my driver its just that cubase refuse to use it - i have the option to switch back to it from my generic sound driver but the moment i try it gives me the “driver not connected” error
my driver is updated with the latest patch and again i suffer problames only in cubase…(other programes work fine!)

it happend to me before and after few Restarts and Shut Downs it repeared himself… i have no idea how and why…but it did.
the thing is im trying to do it again and ofcourse it doesent work.
im using Cubase 8 Pro.

help? got really important work wich is on hold right now :frowning: