So last night I completed the Eureka endgame quest for the NCR. After all the slides went through, and it got to the credits it asked me if I wanted to return to the main menu (click no) or reload a previous save (yes) so I clicked on Yes, and it took me back to Hoover Dam again, and now I have to play the endgame quest through again.

I am playing on the PC, and never had this issue when I had it for my PS3. The only mod I have is a bug fixing one, but maybe that has something to do with it? Not sure though.

What exactly is the bug here? You can't play in a post-battle world.

Okay once the credits started to roll I clicked right away since I didn't want to read through it all. The box came up saying that I had completed Fallout New Vegas and asked me if I wanted to reload from a previous save or exit to the main menu. I clicked No because I wanted to play through the DLC's since I have the ultimate edition. It took me back to hoover dam and the box came up saying "Speak to Colonel Moore".

Let me play through again and I'll post screenshots it will be easier.