Hello!
I have Yenten core v1.2.1.0-f93d599-beta.
How can I update to the latest version....do i have to import private keys from my addresses or what?
Do you have wallet.dat? On windows 7, it is in C:\Users\\AppData\Roaming\Yenten.
If you have it, backup the Yenten folder before. After backup, you can start new Yenten core.
But you have only private keys, you can use importprivkey command in the Console.
Start new Yenten core. Select Debug window in Help menu.
On Debug window click on Console tab and type the command importprivkey
importprivkey