Exporting Slideshow to PDF or JPEG

[pauls91371608]

When I try to export my LR CC slideshow to  PDF or JPEG, I receive a pop-up that reads: 

"Some photos or videos in the slideshow point to sources that are currently unavailable.  They will be omitted from the slideshow. To create a slideshow with omitted photos make sure all source files are available before exporting the slideshow."

I've tried creating the slideshow from a collection and from the catalog.  

Does anyone know how to trace or track down the source files for the omitted photos?

Paul

[Rob_Cullen]

Two links for you to learn how to find 'missing' photos-

FIND MISSING FILES AND FOLDERS- LIGHTROOM BLOG

MISSING FILES & FOLDERS (Lightroom Queen)

The error message is symptomatic of 'Missing' photos (ie. the Catalog does not know their location), or- an external drive with the files may not be connected, or you are using Smart Previews only with the original files off-line.

[pauls91371608]

Thanks for the help.  I'll check it out.

Appreciate it.

Paul