Thing is, after beating the game 2 years ago, I reinstalled it... with mods... lots of mods but in the final quest "Light the Dragonfires", Chancelor Ocato and Martin meet, I get stuck by the script and they are supposed to talk... but they don't. Is there anyway to solve this? a command to trigger the quest next phase?

Have you tried waiting in the room that they are in?

That sometimes works for me.

Also, what mods do you currently have running (in response to the thread title)?

Yes, I have waited (physically) but the wait command does not respond.
Currently the mods are:

-UnnecessaryViolence
-Oblivion Sexualized Monsters
-Windfall
-Kvatch Rebuilt
-Vampire Aging Disabled
-Lorecreatures
-Enhanced Water
-LCE-addon
-DLCHorseArmor
-Quest Award Leveling
-Undercover
-bgMagicEV
-Knights (of the nine)
-StrongerAllies
-TOTF (tears of the fiend)
-DLCShiveringIsles
-RTT (ruined tail tale)
-Adelina
-Bartholm
-Colourwheels Sexy Female NPCs
-Colourwheels Sexy Stock Armor and Clothing
-Natural Weather/habitat
-Lithian Nature of the beast
-SPARTAN VIs Diverse City Guards
-300F_crime_detection
-Obliuvion XP
-Conduit Magic
-HBArgonianAndOrcZombies
-Ren_BeautyPack
-All Unique landscapes

Apparently, and without knowing how, I was able to solve it. The mistery of the reason remains but I think this thread lost its meaning. If a moderator reads this, please, block the thread. Thanks.

Glad it's working for you now. I guess it was just a minor glitch that sorted itself out.