Reason Rewire problem has developed

I have been using Reason rewire with Cubase 6 (now 6.5) for a year with no problems. I concluded a project and have started another one. In the process, I have become unable to open reason rewire in the Cubase device dropdown menu. When I click on that, I know what I should be seeing. However, all it does is partially minimize the screen, but the reason rewire set-up options do not appear. The only think I did differently when I started the new project is to open an “empty” template. Does anyone have any ideas on what I might need to do to get reason rewire up and running. FYI, when I open reason following cubase, the reason program indicates it is in “slave” mode, so the problem is with cubase.