Well, Firstly, I want to thank you for trying to help. In the end I still don't know what caused the problem.. I ended up having to reset the computer back to factory settings and lost the files that I had been working on to some sort of corruption. 

I decided not to reinstall a standalone 3delight and left the DAZ engine as it was, and so far have't had any issues with the program at all.

The only difference I can see now is that I'm prompted to install twice for every file shrug