I want to update my mt to the latest version... I followed the instructions in the manual. The site is manually restored and uploaded the files.
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Well, what version were you starting with. Details helpful...
I am using Movable Type Pro version 4.21-en with: Community Pack 1.6, Professional Pack 1.2.
You need to upgrade to 4.35, for security reasons. That upgrade should be straightforward. MT5 is a different architecture. In general, the Melody project will offer a better upgrade path for MT4. IMHO.