I'm using QGIS version 2.12.2, and using print composer to export my map to an image file (I've tried pdf as well). In the print composer it displays fine - just a basemap overlayed with land type data. However, as soon as I export the map, the basemap and the overlayed data are misaligned; rivers are categorised as fields etc. How can I ensure that the image produced from print composer is accurate?
Don't use the OpenLayers plugin. Use the QuickMapServices plugin instead, as that works correctly with the map composer.