Well, as it turns out, I figured out a workaround, but it’s a real hack.
Create a folder called literally “
%PUBLIC%” on your desktop, create a folder in it called “
frc2019”, then create a folder in frc2019 called “
tools”. Copy the SmartDashboard.vbs file from C:\Users\Public\frc2019\tools into the new tools folder, then edit that copy and change the
toolsFolder= line to read
toolsFolder = "C:\\Users\\Public\\frc2019\\tools". When you’re done, double-clicking that .vbs file should run SmartDashboard. The DS option for SmartDashboard will then work.
This same workaround works for Shuffleboard.vbs.
Note this workaround only works if you start the DS from the Desktop shortcut. Basically the DS looks in the current directory from where it started from. So if e.g. you start the DS from the start menu instead, you’ll need to put the %PUBLIC% folder in a different location. The error message the DS gives you will tell you where to put it.