How to get Studio to open GSD files by default

To get Studio to open your old GSD files, do the following

Go to the folder you keep all your GSD files in
Right click on any file in the folder
Left click Properties (bottom of the list)
Left click the Change button
Left click on the Browse button
Navigate to your Program Files (x86) folder and open it by left double clicking on it
Find a folder called Silhouette Studio
Left double click to open it
Look for a file called Silhouette Studio.exe
Left double click on it (that window will close)
Left click OK to close that window
Left click OK to close that window