I have just purchased your pro version (3.3.5) on Feb 8. When I activate it, I get a slew of “Strict Standards… at the top of each page and from all other plugins. When I deactivate your plugin, these messages go away. I have tried both of the modifications to your php suggested above, and neither one suppresses the message. I did not get any of these messages when I installed the free version of your plugin. FYI, I am running WP 3.4.2
Here are some of the messages:
Strict Standards: call_user_func_array() expects parameter 1 to be a valid callback, non-static method GoogleSitemapGeneratorLoader::Enable() should not be called statically in C:\aCoventor.com\current\wordpress\wp-includes\plugin.php on line 403
Strict Standards: call_user_func_array() expects parameter 1 to be a valid callback, non-static method GoogleSitemapGeneratorLoader::RegisterAdminPage() should not be called statically in C:\aCoventor.com\current\wordpress\wp-includes\plugin.php on line 403
Strict Standards: Non-static method GoogleSitemapGeneratorLoader::GetBaseName() should not be called statically in C:\aCoventor.com\current\wordpress\wp-content\plugins\google-sitemap-generator\sitemap.php on line 227
