For Scenario's you need to use the Trainer corresponding to what civ 5 it came out for the Vanilla Civ5 had a few on release and several more as DLC's before the God's and Kings Expansion which add'd 3 more Scenarios.
Civ Vanilla + DLC'sworks only with vanilla trainer, sadly you all b---- so much its no longer supported and you cant use it its out-dated. Parts of the trainer might work but mostly it will not)
Rise of the Mongols
Conquest of the New World
Paradise Found
1066: Year of Viking Destiny
Samurai Invasion of Korea
Wonders of the Ancient World
Civ God's and Kings: (works only with GK trainer)
Fall of Rome
Into the Renaissance
Empires of the Smoky Skies
Civ Brave New World: (Current trainer only- bnw)
American Civil War
Scramble for Africa
It's very helpful! Thank you very much!
And of course, thanks for cheathappens!