I have 2.2.3.1 and tried to upgrade to 2.2.4.1 and 2.3 beta.
But I get the same error in the upgradescript: "Failed to execute DB schema transformations. MySQL said: Duplicate column name 'hash'".
And the contents of the overview tab is: "{"contents":{},"current":{"type":"html","data":"We are sorry, but a fatal error prevented Feng Office from executing your request. An Error Report has been sent to the administrator.","actions":null,"config":"overview-panel","makeDefault":null,"url":"index.php?context={%221%22:[0]}¤tdimension=0&ajax=true&c=dashboard&a=main_dashboard¤t=overview-panel&_dc=1367522002326"},"errorCode":0,"errorMessage":"","u":2,"events":[]}{"contents":{},"current":{"type":"html","data":"We are sorry, but a fatal error prevented Feng Office from executing your request. An Error Report has been sent to the administrator.","actions":null,"config":"overview-panel","makeDefault":null,"url":"index.php?context={%221%22:[0]}¤tdimension=0&ajax=true&c=dashboard&a=main_dashboard¤t=overview-panel&_dc=1367522002326"},"errorCode":0,"errorMessage":"","u":2,"events":[],"notbar":true}"
What can I do?