A recent convert to QGIS, I have versions 2.8.5 and 2.12.2 installed on my PC. The plugin Manager tells me I have v2,10.3 of the Processing plugin installed in the plugin folder of my local drive and v 2.12.2 is available in the official repository. When I try to upgrade I get the following error:
Plugin installation failed: failed to unzip the plugin package. Probably it's broken or missing ftom the repository. You may also want to make sure that you have write permission to the plugin directory: C:/Users..../.qgis/python/plugins
I have been able to successfully install other plugins and have manually tried copying the processing folder from a colleagues successful update into the plugin folder but the error persists.
Any idea what I'm doing wrong?