Firstly, quit Portrait Professional if is it running.
Now download and open this link:
Open the zip and inside is a .reg file, and if you double-click that to open it you will add four values
to the registry. This will reset the position of the sliders so you
can see them again. When doing this you will probably see various warnings from Windows. The exact warnings
will depend on which version of Windows you have and any security software you may have installed.
When you next see it the sliders dialog will be in the top left of the screen.