Undead Nightmare HELP

[JaBaDaBaDu]

Hello, I feel that I am stuck in Undead Nightmare DLC.
I have finished quest: Filth and other entertainment and then I have finished: Get back in that hole, partner, but after that nothing happens, one of liberated towns was once again under attack, I cleared that and nothing happens. All towns are discovered and safe, no other quest icon is on the map, Mexico part is locked. Please help, thanks

* I loaded save and once again done quest: Get back in that hole, partner and nothing happens

[Smity]

You have to do Nigel's mission so you do you'll need to collect dessert sage and violet snowdrops the sage plants can be found on the far west side of the map and the snowdrops can be found up at tall trees

[JaBaDaBaDu]

Thank you so much for the help