Visual Studio Install generating multiple files instead of just setup.exe

Question

I had an install project that I have been using and it was generating a setup.exe file... suddenly (I don't remember changing anything) the folder now ends up with many files:

It used to end up with just the setup.exe file. (other files were generated during the compilation... but just the setup.exe file remained after compilation was complete.)

Anyone have any idea about what might have changed?

Note: the program files directory has all the usual exe, configs, dll's and such... like this:

Answer 1

So, for some reason (brain blip) I started getting the install from this directory:

Nexus\NexusInstaller\NexusInstaller\Express\DVD-5\DiskImages\DISK1

When in fact I was before (and should be now) getting it from this directory:

Nexus\NexusInstaller\NexusInstaller\Express\SingleImage\DiskImages\DISK1