If windows installer launches when you open TurboCAD Deluxe 15 you will need to download and install the 15.2 patch.
http://downloads.imsidesign.com/Updates/TurboCAD-Deluxe-15-2-Update.exe
If you experience this problem with any other version of TurboCAD, you will need to remove TurboCAD with the windows installer cleanup utility.
