Cannot route up ladder.

It's actually started working. It's not 100% of the time.

I would test it further but the sound from that broken fabricator gave me a severe headache and I need to take a break.

Update:

It does appear to work now. I still cannot find a reason for the routing issue as I deleted everything on the lot save the walls and ladders to test this issue, but it *might* have been solved by bulldozing the lot both terrain and building. I've noticed the lot in question -> Shipping Views in Evergreen Harbor *does* come with a lot of routing issues as it's not entirely seamless.

Anyway, it does work now for some reason when it absolutely wouldn't budge before!

I'm having the same issue. I don't even have eco lifestyle, I'm trying to use a ladder in Glimmerbrook. I also turned off all my mods and cc, and the sim will walk up to the ladder, and get the "no possible route" bubble.

@Psychotps I just re-checked and had no issue with my Sim dropping the action or the route to go up two flights over a stairway then a ladder to brush er teeth on the third floor. I'm wondering if the issue may be a Mod &/or CC that is interfering like in this post from last week:
https://answers.ea.com/t5/General-Discussion-Feedback/TS4-Ladders-not-functional/m-p/9185392#M30310

Even if the Mod &/or CC was removed, if the cache file was not also removed, you may not be getting a correct test of whether it's causing the issue. Please try the following:

Please try the following in this order without skipping any steps, even if you’ve done some of these steps already:

• Exit your game then exit Origin. Drag the Mods folder from your 'The Sims 4' folder onto your desktop (for future reference) then delete the localthumbcache.package file in your 'The Sims 4' folder. (When you restart the game it will automatically create a new Mods folder.)
• Next please run a game repair [ Open Origin, click 'Game Library' then right-click Sims 4 > Repair Game ]. Make sure to let it run until it has completed all repairs (it will do the base-game first, then run through each of your expansions/packs).

Do not re-add any of your Mods or CC at this time. Please then restart your game and do not enter your previous game-save but begin a new game. See if the issue is present in this new game-save.

If this fixes the issue you can re-add your Mods/CC one at a time to see which were conflicting with the function/causing the glitch - but do not re-add the old Resource.cfg file from the old Mods folder, as it is possible for it to have become corrupted.

If you have a lot of Mods or CC you can do so by via the 50/50 method. Let me know if you need directions on this.

@TiggerIsMyCat24 Please try removing the Mods folder as stated above plus deleting the cache file mentioned. Also, did you test with a fully cleared path around the ladder top and bottom? Keep in mind, also, that Sims cannot carry certain items up/down ladders, if that is possibly a factor in your tests. (ie: Trash, and I think laundry.)

@Psychotps 

I also had a Sim living on "The Shipping Views"  lot and did run into cancelled actions.
This was especially noticeable when routing is by ladder.
My Conclusion: Actions that may require holding an object to take it to another level will cancel.
Using ladders will not allow Sims to 'clean up' or take out trash. The default action is to carry dirty dishes or trash piles. You will need a sink on each level to clean up dishes. Trash piles require you to direct your Sim to put it into their inventory or drag it to ground level to be taken out.
May not be a solution but it worked for me.