Yes, WordPress 3.5 has sacrificed some backward compatibility for a minor security upgrade, causing this plugin (and others) to no longer work. Apologies to all our users who have been inconvenienced.
We have upgraded our plugin in the just-released 2.10 version, which is compatible with the new WordPress.
Follow-up – If you can’t get into the WordPress log-in screen as a result of this problem, the way to resolve it is to delete the directory digiproveblog, the usual location is /wp-content/plugins from your wordpress directory. This will remove all the plugin code.
Once you do that you should be able to log in, then you can re-install the latest version (2.11) which does not have this problem.
Once again apologies to those of you who have been affected, it was actually caused by WordPress 3.5 introducing a single more stringent warning message which in turn triggered all this stuff
Regards
Cian
Have had no further complaints or feedback about this. The upcoming WordPress 3.5.1 corrects the underlying issue anyway – this is at RC1 status so it will be soon.
I am now marking this issue as resolved, but if anyone is still struggling with this, please contact us or raise a new support issue.
Cian