The installer tells me the installation .zip file is corrupt.

Ostrava, 20.2.2012 - New releases of both JoomSEF 3 for Joomla 1.5 and JoomSEF 4 for Joomla 1.6/1.7/2.5 were just released. Actual JoomSEF versions are 4.2.4 and 3.9.4. Also new extensions were released since the last update. Click to learn more about changes.

Ostrava, 28.11.2011 - We are releasing new major version of both JoomSEF 4 and 3. These version include several brand new and exciting features, such as 3rd level domain support for individual components, direct access to Google analytics with Flash charts, full-featured sitemaps, web-crawl functions, ...

Ostrava, 9.10.2011 - New releases both of JoomSEF 3 for Joomla 1.5 and JoomSEF 4 for Joomla 1.6/1.7 was just released. Actual version are 4.1.1 and 3.8.3. Several new extensions for both these versions were also released.

Ostrava, 13.7.2011 - New JoomSEF extension for JoomShopping component was released. Available both JoomSEF 3 and 4 (Joomla 1.5 and 1.6).