If you are installing LDUP14a or LDUP19 and you have already run LD or Showtime, then it is best that you reboot your computer first. This is because some LD system files are kept in memory by Windows. The installation program may not be able to install over these files if they are in memory. By rebooting, you ensure that no LD files are in memory. Run the update files .
Update files are self-extracting .EXE files.
Simply run them like any other program. The installation program will put all the new files in the correct locations. Run LD and Showtime . The next time you run Lasershow Designer or Showtime, the programs will detect that you have updated. They will first confirm that you agree to the LD License.