hello,

this was the problem. Weird that it was present for v2, v3 and u2, I suppose there was a problem with windows or 7zip that has been fixed when I rebooted the coputer this week.

Thanks for your help.

just one thing, on mining rig rental, my 2 miners stopped when the rental ended.
I use --smart-pers and I didn't have problem with older versions since this option came up.
We will see next rental if there is a problem there.

thx