I have been using the qgis2leaf plugin and succeeded in creating interactive maps, adding legend, photos, etc. But suddenly I noticed that the OSM base layer has disappeared and the polygons are not getting published the way they are styled, so i tried reinstalling the plugin. And this is the message I am getting :-
I am unable to install the plugin. I am using QGIS 2.6.1 Brighton.
This seems to be a rather elusive issue. This thread http://comments.gmane.org/gmane.comp.gis.qgis.user/31735 suggests that restarting a few times might fix it.