I'm also having a problem getting LT 10 to fire.
LT 8 happened shortly after I arrived at the Umar Hills, so after it was done I had everybody stand around for about 10 minutes and rested. Nothing happened. So I reloaded, got LT 8 and then went and watched 30 minutes of the Red Sox 2007 World Series DVD while leaving the game running. Then I came back and rested and nothing happened. So I reloaded again, sat through LT 8, did the entire Umar Hills and Temple Ruins quests (without resting), came back to Umar and rested - nothing. Reloaded from after Temple Ruins and tried resting at the Keep (both outside and inside) and at the Inn of the Seven Vales (all seperate reloads) and LT 10 still wouldn't fire. And everybody's fatigued, so being tired isn't an issue.
For the records, yes I have Nalia Romance Active =1. The only other mods are the DungeonBeGone, Banter Packs, Flirt Packs and Keto.
(wow, note to self... don't bother with "long day" checks, it's not worth it, just let Nalia complain about how tired she is even if the player rests after 90 seconds and take the lumps.)
I heartily agree with this sentiment...