Just to give some more info.
Windows 10 - 64
I recently updated to SW 2017,
I reinstalled Render 220.127.116.11 and Maxwell for SW 4.1.71
Studio and Render are fine and seem to be registered as when i check the licensee type it shows everything as correct.
When in Solidworks I save the assembly as a .mxs then open in studio.
However when i try and export or save scene as .mxs it launches the lic activator which seems to work.
When the activator window closes the bottom left side where I usually see it processing my files as it creates mxs i get and error.