Quote - If you didn't change anything on your disk then the restart of the render shouldn't be a problem.

Without knowing the actual error messages I can't quite understand what's happening.

 

Not sure it helps at all but over the last few days I must have resumed Luxrenders thity or fourty times, as I wanted to show renders a various points, and each one has restarted without an issue

 

 

I use Poser 13 on Windows 11 - For Scene set up I use a Geekcom A5 -  Ryzen 9 5900HX, with 64 gig ram and 3 TB  storage, mini PC with final rendering done on normal sized desktop using an AMD Ryzen Threadipper 1950X CPU, Corsair Hydro H100i CPU cooler, 3XS EVGA GTX 1080i SC with 11g Ram, 4 X 16gig Corsair DDR4 Ram and a Corsair RM 100 PSU .   The desktop is in a remote location with rendering done via Queue Manager which gives me a clearer desktop and quieter computer room.