If you have a problem after or before installing the component please read our troubleshooting page. These issues are more likely to occur if you try to upgrade this component while you have an older version of another component of ours still installed on your site.
This version of Admin Tools introduces IPv6 support. If you have an IPv6 enabled web server you can use IPv6 addresses and blocks in white- and black-lists. The automatic IP banning will also work correctly with IPv6 IPs as well. Do note that the Geographic Blocking doesn't work with IPv6 as the third party IP to country database we are using is not IPv6 enabled.
On popular request we added the ability to redirect non-SEF URLs, such as index.php?option=com_oldcomponent¶m1=12¶m2=34. You will need to set the "Keep URL Parameters" option to No in the URL redirection editor for these URLs to work. We also improved the URL editor page to make it self-documenting and easier to understand.
This version requires PHP 5.3 or later. The rationale behind this is explained in our statement of mid-February 2013. It won't install on hosts running PHP 5.2 or earlier. Moreover, due to the necessary Joomla! API changes found only in Joomla! 2.5.6 or later, this version will not install on Joomla! 2.5.5 or earlier versions. In any case, it will tell you exactly why it cannot be installed (minimum PHP or Joomla! version not satisfied).