Please follow the upgrade instructions in the GreenHopper Installation and Upgrade Guide. Additionally, please read the following instructions below before upgrading GreenHopper:
If you have an existing license for GreenHopper 3.8.x or earlier, you will need to upgrade it before you can use GreenHopper 4.0. Any existing 3.x license files will not work with 4.0. Before upgrading to GreenHopper 4.0, please upgrade your license as follows:
If you are currently using the Links Hierarchy Reports plugin with GreenHopper in JIRA, you will need to upgrade your plugin to be compatible with GreenHopper 4.0. You can download the latest version of the Links Hierarchy Reports plugin from the Atlassian Plugin Exchange.
You can update this plugin as per any other JIRA plugin. See the JIRA documentation for instructions.
Internet Explorer 6 is not supported for GreenHopper 4.0. If you are currently using Internet Explorer 6, we strongly recommend that you upgrade to Internet Explorer 7 or later. If you cannot upgrade, you may want to consider installing Google Chrome Frame instead.