I may have caused this myself, I have a feeling that I clicked a link when the plugin was updating to the latest version.
Now, I've manually removed the plugin from a local install (MAMP), everything works ok, and reinstalled it. Still, so far so good. When I activate it i get the following message in Chrome:
The website encountered an error while retrieving http://msl2013/wp-admin/plugins.php?activate=true&plugin_status=all&paged=1&s=. It may be down for maintenance or configured incorrectly.
There must be some remanence remaining, does anyone know how I could strip out all instances of it and start again? All my settings are save from the active website, so no problem there.
Many thanks in advance,