Correct BuBBy.
The version provided on the GAOTD website today is 4.78. The one on the Agogo website is 4.79.
The only difference seems to be that version 4.79 has the "dll" issue removed (this explaining the +0.01 ? :-).
The provided data [license name & registration code] does work with it. I actually installed this version directly this way.
However no possibility for me to run the version 4.78 once installed, even when adding the dll file downloaded from the "several times mentioned" website (not a good file regarding my own OS - or similar message, don't remember exactly).
With 4.79 installed, no "MSVCRTD.dll" file sited in the 'Agogo DVD Copy' folder, or in the OS's 'system/system32' sub-folders either.
Uninstalling it for some reason I had an error with "pcouffin.inf" file sited in the 'Documents and Setting\Owner\Application Data\' folder - I had to end the "PcSetup.exe" process from the Task Manager so that the uninstalling procedure can go on and finish itself.
To my knowledge the registry entries with license name and registration code were removed then.
Following Whiterabbit's suggestion above I don't see why it wouldn't be alright to go from version 4.78 to 4.79 if one has not kept the data upon installing the software.
And I just want to add that the french translation is terrible for the eyes :|