Sympton: Solar Fire Gold (v7) doesn't work on the new windows system and you get an error similar to this:
Page file not found C:\Program Files\Solar Fire \V7\uni.pag

This is probably because your settings in Solar Fire were carried over from the old Windows to the new Windows.
However the old settings from Windows XP etc won't work on the new windows system.
Your Solar Fire Gold files and settings live in your 'documents' folder so you may have transferred them without even realizing it.

What you need to do is delete all your settings so they can be recreated.
Here below is the quick way that doesn't require reinstalling the entire program from scratch.
This will reset all the settings to the defaults but it will preserve all of your files and charts.
You will need to reenter your default place, house system, calculation tab preferences, etc, so look under 'preferences' / 'edit settings' and copy down what selections you have that you want to keep.

Procedure: First Start up Solar Fire Gold.
Click on the top menu of solar fire on 'utilities' and then on 'open user files folder'
In here you will see a bunch of files and folders. There is a folder in here called 'Settings' that we want to get rid of. Keep everything else.
'Right-click' on the folder that says 'settings' to bring up the options pop up menu. From the pop up select delete to delete this folder.
Now shut down Solar Fire Gold. Ignore any error messages it has when shutting down, there probably will be one or more errors.
Now start up Solar Fire again. The program will act like it's just been installed for the first time. It will ask you if you want to import your files, say 'No', the files are really still in there. Also say no to updates.

Now you can go to the top menu to 'preferences' / 'edit settings' and set up your favorite preferences once more.