Did you run the installer as "Admin"?  (right-click and hit "Run as Administrator")

I run WMDC manually after install CCP with one of these:

C:\Program Files (x86)\Universal Remote Control, Inc\Complete Control Program\USB\drvupdate-amd64.exe

C:\Program Files (x86)\Universal Remote Control, Inc\Complete Control Program\USB\drvupdate-x86.exe

("C:\Program Files\..." if you are on 32 bit)

But the MX-1200 is not a CE based device IIRC so you wouldnt need it.  I need it for my MX-980s.