Melco Letera Version 2 was an add-on to EDS3 and EDS4 and was discontinued in the early 2000's. No support or updates of Melco Letera are available.
It must be installed from the original CD and is only compatible with Windows XP.
For current computers running Windows 7, 8, 10 or 11, Melco recommends DesignShop v11.