If you have ever hooked up your laptop to a secondary monitor and then disconnected without remembering to move the windows back to the primary desktop, you have probably encountered this problem. The application is running, and you can see it in the taskbar, but you can't see it on the screen, because it still thinks it is running on the secondary monitor.
To fix this problem, first make sure you have alt-tabbed to the window, or clicked on it once to bring it into focus. Then right-click on the taskbar and choose "Move." At this point you should notice that your cursor has changed to the "move" cursor which looks like a cross. Now, hit any one of the arrow keys (Left, Right, Down, Up), move your mouse, and the window should move back onto your screen. Alternatively, you can Alt-Tab to the window, use Alt+Space, then M, then Arrow key, and then move your mouse.
You can also right-click on the taskbar and choose to cascade your open windows, which will often bring the window back onto the screen.
If these techniques do not work for you, you can close the Sawtooth Software program, delete the preference file that stores the last known window positions, and then restart the software. The name and location of this preference file varies on the software.
For example, for CBC/HB the file is called CBCHBSettings.xml. On a typical computer, it is found here:
C:\Users\YourName\AppData\Roaming\Sawtooth Software, Inc\CBC Hierarchical Bayes Module
For SSI Web 8, the file is called SSIWeb_Forms.settings and is typically found here:
C:\Users\YourName\AppData\Roaming\Sawtooth Software, Inc\SSI Web