It is known for games like Half-Life or Star Trek: Voyager Elite Force that older installers may start but seem to hang indefinitely. Sometimes that happens already before the installer is actually visible, sometimes it hangs at 100% and never finishes. The following might help in such a situation:
Hint: If you queue does not show any elements, it might also be the case, that you started the task manager as a different user than you installer is run as. (This likely happens, when you had to give the installer elevated rights.) So if you are in such a situation, start the task manager as the user you started the installer (or provided the credentials for elevated rights). Simply enter
task into the start menu and run the task manager as the required user.