slideshow infolabels not available?

I have 2 identical configs with Win10 and Kodi 17.0 RC3 and the Mimic skin.

If I make a photo slideshow on the test env. the infolabels are shows correctly over the pictures. 🙂

On the htpc in the lifing room (prod env) only the characters () are show. The values of the infolabels are empty

The pictures are the same!

This is the info I like to see
<label>$INFO[slideshow.headline][CR]$INFO[slideshow.exifdate] $INFO[slideshow.city] ($INFO[slideshow.countrycode]) $INFO[slideshow.sublocation][CR]$INFO[Slideshow.Keywords] </label>

Can some body give some hints to find to resolve this difference?