Keyboard no longer works with Citrix Receiver after upgrading to OSX 10.9.5
I use Citrix Receiver to connect to my office systems when I work from home. The office systems are Windows 7 based and I work at home on a Imac. Up to yesterday everything worked like a dream. Then I upgraded from OSX 10.9.4 to 10.9.5 and sine then my keyboard has stooped responding when I am connected to my office system. When I close Citrix the keyboard works OK. I tried to connect using a MacBook still on 10.9.4 and there are no problems with the keyboard in Citrix. What do I do to get the keyboard to work under 10.9.5?