the jarl sent the letter asking to come and meet him the quest seems be stuck at stage "use drafting table" I could go further in the achievements only by using " setStage BYOHHouseFalkreath XXX" but was not useful
Then I could build the manor, miracle - it appears on screen, I can even enter it and the house add-ons can be built as well. So just to be sure, I restarted a new game keeping the exact same mods and same load order, went asap (after Helgen) to Falkreath and did what the jarl and his steward were requiring. I don't have MODs like Birds, Flock or something that adds many spawn points (I read it was the source of same problem for many people) but I thought of a compatibility issue with "Better Fast Travel".
SKYRIM LAKEVIEW MANOR MODS MOD
I have many MODs ( mod list and load order) based on this marvelous guide S.T.E.P. The command " coc BYOHHouse1Exterior" brought me to the expected location, close to the workbench. So, using the console, I found the related BYOHHouseLocation_var was the correct one. I been searching the net and I found several articles about the house being built, but on another location. Error: Cannot call IsSameLocation() on a None object, aborting function call