Newest update is giving me a PHP error

Yes, I’m getting this error message too!

Hey thank you for reporting this. I’m not used to test on PHP 5.3 because it reached end of life 7 months ago…

V 0.4.1 will restore compatibility. Please go ahead and install this one instead. If you can, please look at upgrading your PHP version to 5.5 (or even better 5.6) to get all the security features for your site ??

The new version of the plugin broke my site as well ??
I have PHP 5.3.29 and I have already asked the hosting company to upgrade it. But anyway, I hope you will at least temporarily restore compatibility.

I’ve you tried Release 0.4.1?

I upgraded PHP and now everything works fine. I have another problem though, my site has many articles on similar subjects and it might happen that some keywords offer 10 or more articles as the hint. It seems your plugin shows only first 5 or so, completely omitting the other ones. Is it something you could address as well?

Sure, I did another release (0.4.2) addressing just that.

Please use the following code in a mu-plugins, plugins or theme functions.php:

add_filter('mentionable/autocomplete/args', function($args) {
  $args['posts_per_page'] = 10;
  return $args;
});