Unable to Install FTN95

I tried to install FTN95 on a Notebook. However, I got the following message:

InstallShield 1607: Unable to install InstallShiled Scripting Runtime.

What does thies mean?

Solution:

For some reason the Microsoft inistaller was not registered. Executing the following to commands (in this oder) fixed the problem: 1.) msiexec /unregister 2.) msiexec /regserver