Minimum version of umbraco and usync for migration

[nikro412956]

What is the minimum required version to be able to convert and migrate a website? I am currently trying with a umbraco 7.4 site and the latest usync 3.x.x.740 and it seems to detect the version correctly initially but then won't convert it. Not throwing errors. Just going to the migration screen with nothing to show for it.

EDIT: Recopied the files and it seems to have converted correctly.