burn button is grayed out

I cant burn dvds using Nero Express 6 and DVD SHrink 3.2
I add the dvd files to the project, click finish, get to the last burn page where it says to click on the burn button on the bottom right hand side but the button is grayed out. Nero recognizes my dvd burn drive and the project is not too big for the dvd, don't know why I cant burn. Any suggestions?

 

Try this:
Open Shrink, click [bold]Edit[/bold], then click [bold]Preferences[/bold] then click [bold]File I/O[/bold]. Under Burning Settings,see if you have checked "Enable Burn With Nero"

 

I'll try that, thank you.

 

enable burn with Nero was checked off but the Nero Burn button is still grayed out. This happens no matter what I try to burn. I tried to burn a backup startup disc for my laptop and I had the same problem. Any other suggestions?