Photoshop Tritones

[KGeeZ00]

While trying to create a new Tritone image using Adobe Photoshop 23.4.1 (on an iMac with mac OS Monterey 12.4) After designating and adjusting the colours, I tried to click “OK” but I get this pop-up message (see attached). Even if I change the names of the colours used it will not accept them and allow me to move beyond this stage. Duotone still works though. Am I missing something? I've tried closing and restarting Photoshop but the tritone issue still won't allow me click "OK" and continue to save the image.

Thanks in anticipation.

[marliton]

Hi. Please try resetting the preferences. Prior to restoring your preferences, make sure to back-up your preferences: https://helpx.adobe.com/photoshop/using/preferences.html#reset_preferences

[KGeeZ00]

I'll check. Thanks for that.

[Mike_Gondek · Accepted solution]

It is your white. You need some dot in the color not all 0. White is not a CMYK ink unless you run a spot base, like a priner in painting walls.

[KGeeZ00]

Yes that, did it — thanks.