Joomla 1.5 to 2.5 Migration

This PHP script assumes you have used the jUpgrade or SP Upgrade tool or similar to migrate from 1.5 to 2.5/3.x to preserve user ids. First update JEvents on source and target websites to the latest JEvents version, and back up both websites to be safe! Download the script from here and unzip. In phpMyAdmin or similar, remove all the Joomla 2.5/3.x jevents tables: j25_jevents_categories j25_jevents_exception j25_jevents_catmap j25_jevents_icsfile j25_jevents_repbyday j25_jevents_rep.....