When converting my indesign file to PDF I lose my background colour.

[Abbie5E82]

 

Hi there please help,

when converting my file to PDF I loose all my pages colour of black. My A Masters are all black and I can't understand why. 

What should I try next? 

Thanks.

Abbie 

[Derek Cross]

Which version of InDesign and OS?

What happens when you choose the Adobe PDF Presets, for example, PDF/X-4?

[Abbie5E82]

I am the update before 16.0 I am yet to install the latest version. 

i click l high quality print/ layout two continuous facing pages/ export all layers

 

[Abbie5E82]

Here is an example of what happens when exported:

 

[Abbie5E82 · Accepted solution]

I have now fixed the problem by putting a box layer-thank you for your assistance