Annie, as Chlodnik says, the blue ring is on Juno ....here is the final solution:
[color="White"]After opening the 'door with no keyhole' and getting back to the 'main' area, use the lift and shut the sliding door, then go back up and retrace your steps back as the ring is hidden on the other side of the sliding door.[/color]
Chlodnik, I can see your problem, but can't understand why it's going wrong as speaking to the guard is only set by talking to Charlene. I've downloaded the game again to make sure I'm using the same version you are and have replayed it from the beginning and the fargo section works fine. I've sent you a saved game at the point where you are just about to enter the council and talk to Francis ...and I've reloaded it twice and it works fine.
If anybody else is having problems at that point I can send the same save game to them if they send me a personal message with their email address, but note that this save game has all the rings deposited in the various pots, so it is the final part of the game and all items required lying in the park.