Error msg: Insert disc

You are not the first person to report that returning to an existing project and trying to export it again fails. There are issues with the

DVD/BD module in Photopia.

However, if you saved the .iso from the original dvdr or you have the original disc or a duplicate there is a way

to create another disc.

If you have either the .iso or the original disc go here: https://www.imgburn.com/index.php?act=download

The screenshot shows the options this burner provides. It's very easy to use. This is just a burning tool and not

an authoring program.

If you want an authoring program, and I strongly suggest getting one, look around for one in 

your price range and preferred work flow. If Adobe hadn't shut down Encore, I would recommend it. I also recommend TMPGE Authoring Works 7.

Here is the link: https://tmpgenc.pegasys-inc.com/en/product/tvmw7.html

If this program is more complicated and expensive than you want, look at Power Producer. 

Here is the link: https://www.cyberlink.com/products/powerproducer/features_en_US.html

It's not as complicated or expensive as Authoring Works.

Basically, what your spend comes down to whether you are operating as a business and want the best looking discs for your clients,

or doing this for a home project just to get playback.

Look around for options.

Hopefully, you have the original .iso or a disc.

This is a follow up to the previous post. I exported a DVD project and the default file is an .iso.

This file will burn multiple versions within Imgburn. Quick and Easy.