I installed the OpenLayers-Plugin and set the CRS to EPSG:3857.
When I go to Web / OpenLayers plugin I get the menu with the various maps, but whatever map I choose, all the tiles are white. The layer shows up in the legend correctly, if there is another layer underneath, it is hidden by the white tiles.
When I open the OpenLayers toolbar, the small preview map is also white.
What could be the reason?
The shapefile I used can be found at
I am adding screenshots with OpenLayers active and off: