This issue has been posted in the past and I believe that you need to run the V4V3.bat file to generate those missing files.  The hierarchy is Runtime>Libraries>!DAZ>DzCreateExpFiles-V4V3.bat.  Be aware, you will not have full body morphing capacity for your V4-V3 model.  Head and expressions morphs is about all you are going to get with this.  IMO, this is really a totally worthless option with very limited options.