No textures in folder after export

Hi all,

I have a quick question maybe somebody can help me with.

I used to export 3dwarehouse models van sketchup to blender with ease, but now when I click export, no textures are exported to the folder. The folder where the textures should be is completely empty. I tried different models, some of which I know worked before, but can’t get any textures exported with the obj file. at the end of the export sketchup says that is exported textures:
"OBJ Entities exported:

14765 Faces
79 Materials
71 Textures"

But where are they?

Please help me, much appreciated!