Thanks for replying ellp.
I did try that plugin, but it could not detect my child theme.
Tried adding my language to Vantage theme but that didn’t work out either.
Any more ideas?
Graphene theme is a far developed theme wih an extensive admin area. You can modify the site quite alot without hardly modifying any code. Perhaps it would be worth a look?
It seems i just solved it.
The images i tried to use where .png’s.
When i tried a .jpg image it worked. So, i re-saved all the previously tested .png’s as jpg’s and now everything works perfectly.
Closing the thread. Hopefully this can be useful to someone encountering the same issue in the future. It kept me busy for a couple of hours.