Halion 5 freezing on Laptop

Hi, since upgrading to Halion 5 from 4.5 I get the Halion screen freezing over the top of the Cubase 7 screen. I can not click on any part of this H5 window including the close or minimise buttons. Where the Cubase window is visible to the side of the H5 window (even though its under the H5 window) I can click on buttons etc. The sound and midi continue to work but I have to close and start up again each time it happens.

I also have installed on PC but have no problems (yet).

Any similar issue anyone, any fixes or should i just uninstall and install again?