Just giving extra data on the issue: I'm playing in Google Chrome v142, on a Windows machine.
I guess the game has an autosave somewhere, because I just re-opened it and some of my stuff was still there, even though I did not use the 'savegame' cmd.
The game opened. Info on offline progress says some 42mil cycles. Still says I have 6 used cores out of 7 (6/7). cmd 'listprocesses' says 'no processes running' (there should be 6). I start at srv.1, which is stopped, and at level 1 (it was level 20 before). I'm able to start the cycles on srv.1 because still have that extra available core. All other srvs say stopped, and cannot be started because all cores already in use.