4.10.3 Cook Error : Splines out of date

Hello,
i have a level using world composition that consists of 9 landscapes proxies, separated into different sublevels. Every time i am trying to cook a standalone version i am getting the error :

MapCheck:Error: Error Landscape_0 Meshes in x1y1 out of date compared to landscape spline in Base1 Rebuild landscape splines

I noticed that some spline parts randomly appear on the sublevels and basically every time i am working on the project i have to sweep through the map and move the parts back to the root levels. However, this time i simply cannot see any parts appearing in the sublevel x1y1.

For anybody else running into this problem :

  • Create another sublevel.
  • Move the whole spline/landscape to that sublevel.
  • Unload it.

This fixed it for me. Was able to do that because the permanent level does not contain and landscape but the splines on it.

Here is another option that worked for me:

Select the entire mesh after you can make it re-appear, then click on the “move to current level” button then click on the Deform Landscape to Splines: “All Splines” button, then rebuild level and error should disappear.