Problem with stairs in doom builder

[DROP THERAPY]

I am having a problem with the stairs in doom builder. As you can see here, doom builder renders the top of the stairs perfectly fine:

 

In the actual game, this isn't the case:

 

I have provided the test map to help diagnose the problem.

map_1.zip

[everennui]

Your stairs are not textured in that file. You need to texture the lower and upper parts of the linedef. 

Addendum: I used GZDoom Builder. 

[DROP THERAPY]

They appear to be textured in doom builder. 

[everennui]

Maybe try using a different version or using gzdoom builder.

[DROP THERAPY]

yeah, there is probably a new version out.

[everennui]

Not likely with Doom Builder. If you do use GZDoom Builder use, GZDoom Builder Bugfix.

https://forum.zdoom.org/viewtopic.php?f=44&t=54957

There's also Doom Builder 2.

[DROP THERAPY]

nope. I did, however, edit the stairs, but that didn't do anything.

[DROP THERAPY]

I just checked using GZDoom Builder, but it's the same thing. it appears to be completely fine, but it isn't. I am using doom builder 2.

[NeedHealth]

If it is any help, it looks like a node problem or maybe a vector one.

[Da Werecat]

Your stairs have infinitely thin sectors in-between them. Which is why you're seeing those paper-thin metal things below the ceiling. I'm sure it's not very healthy for the map's operation.

[DROP THERAPY]

I would fix it, but I don't know how.

[Kappes Buur]

At any time, when you see a linedef with a direction indicator on both sidedef,

 

Spoiler

 

you know that you have some trouble. And a stair sector with 7 sidedefs is even worse.

 

Luckily the fix is easy. Simply draw over each stair sector again to correct the problem.

Or you could install the Stair Sector Builder plugin to build even the most complex stairs easily.

 

edit:

While you are at that website, download Doom Builder: An Illustrated Guide

 

 

Edited September 14, 2017 by Kappes Buur

[DROP THERAPY]

Well I know what to do now, but I don't know how to redraw each stair sector due to the fact that there are already sectors there.