So... you have it fixed for the C:\Program Files...

But in the future, just keep heads-up that if there is another "subdirectory" with an embedded space, it will then create a 3rd parameter requirement when making the call with ' instead of " from InstallShield...

Again, like the sample... once you know what you are expecting, you can add the parameters 1 and 2 together to get the final "path" you were looking for.