Navmesh doesn't work after upgrading to 5.5.1

Development Programming & Scripting Blueprint
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1

Hi,

I upgraded my project from v5.3 to 5.5.1. After testing I realized the navmesh doesn’t work anymore for my map. I tried deleting the existing nav mesh volume bound and adding a new one but it doesn’t work.

I created a new project to test if I am doing something wrong, but I could create a new navmesh without a problem.

Is there some extra configuration I should do to the landscape after upgrading? Do I need to just create a new map and move on?

Thanks.

2

I am not an expert, but after the upgrade the AI settings may be messed up. Anything related to movement can be broken or changed. It doesn’t make sense that the NavMesh is actually broken.

3

For “standalone game” test mode you need to first build paths from “Build > Build Paths” for navmesh to work.

I noticed that my navmesh works on “New editor window (PIE)” test mode without building paths, but navmesh does not work on standalone mode if the paths were not build before running the game.

If i dont build the paths, the NPC just stand and dont move, if i build the paths my NPC move normally.

So try that: build paths.

4

Hey guys,

Doesnt help for me, itried building up ewverything including nav mesh a few times.

I have the same problem, after upgrading to 5.5 from 5.4 my project is messed up wwith navigation. Noone is moving.

Doesnt help to build everythin again.
any more ideas?

1 Like
5

The problem is in the Details of the “Floor”, the CollisionPreset is “BlockAllDynamic”. You need to change it to “Default”.

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6

Hi, haihoisua
Doesn’t help for me; I had tried changing to “Default” and “BlockAll”; it doesn’t work. Any more ideas?

7

Check the bCanEverAffectNavigation on your component…

(I forgot that I modified the engine to set it false by default)

8

I recently upgraded from 4.4 to 4.6 .
now everytime i press play , Engine crashes and gives me DirectX12 and RHI crash error .
I tried fresh new map , it didnt crash , so it is something on the old map.
in the old map , i had some nanite beard and hair . when i deleted those nanites , everything worked fine .
Project was using nanite at first , i disbled it and changed to baked lighting but forgot to delete some nanite assets , didnt know that nanite just being on the map creates crash issues with building Navmesh !