Logos ships with a COM API that needs to be registered with Windows. Some versions of Logos do not register the COM object automatically when installed. Here is a way to manually register the Logos COM object:
See also:
The manual COM registration technique is still relevant for Logos 7. It fixed the problem of Paratext and Logos not scrolling together for one Logos 7 user today.
In Logos 7, the Logos folder in Appdata\Local is probably just “Logos” not “Logos5”