Attached Link: http://forum.daz3d.com/viewtopic.php?t=57491

Well it's working in mine HeRe, I can assure you! I have V4 and V4.1 in the same folder, in the same library and the same runtime [P6].

This quote from a DAZ Mod [Skondris] in their forums, link to the thread attached!

*V4.1 won't overwrite your old Victoria 4.0 CR2's, in case you still want them for any reason.

However, you will want to allow the installer to install Victoria 4.1 to its default location to insure that all the supporting resource files are properly located and updated, etc.*

Injustice will be avenged.
Cofiwch Dryweryn.