I installed a new instance of JIRA just to demo Greenhopper, but, I have been unable to get Greenhopper to work. I get a banner on all JIRA pages GreenHopper is currently unavailable... and various exceptions thrown in the log, such as:
2011-10-28 13:27:15,768 main ERROR sal.core.upgrade.PluginUpgrader Upgrade failed: Attempting to migrate data from Labs ranking table to new ranking table, but new table already contains data.
com.atlassian.greenhopper.upgrade.UpgradeException: Attempting to migrate data from Labs ranking table to new ranking table, but new table already contains data.
at com.atlassian.greenhopper.upgrade.GhUpgradeTask012Dao.migrate(GhUpgradeTask012Dao.java:30)
at com.atlassian.greenhopper.upgrade.GhUpgradeTask012.performUpgrade(GhUpgradeTask012.java:35)
at com.atlassian.greenhopper.upgrade.AbstractGhUpgradeTask.doUpgrade(AbstractGhUpgradeTask.java:46)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
...