If you have the maps akutatourney4 + akutatourney6 at the same time in the BASEQ3 directory, there is a graphic error in akutatourney6 in the outside fog or in akutatourney4 with the yellow outside windows !
CORRECTION of the error:

1. akutatourney6.pk3\scripts\akutatourney4.shader (copy content of shader file with editor), and in akutatourney4.pk3\scripts\akutatourney4.shader (copy < into the very beginning of the shader file).
2. after that in: akutatourney6.pk3\scripts\akutatourney4.shader <delete this file !

1. after that in: akutatourney6.pk3\textures\akutatourney4\*.* copy to: akutatourney4.pk3\textures\akutatourney4\ (3 tga-files)
2. then: akutatourney6.pk3\scripts\akutatourney4\ (delete the directory "akutatourney4" including its content.

Error removed !
Edited 6.78 minutes after the original posting.
Edited 1.43 days after the original posting.

@BOCKWURST - That is a great find. Can I suggest having a look at How to make a patch PK3 - lvlworld.com/thread/260/0

If your fix can be adapted to a patch.pk3 without the need to edit the original pk3 files (and I think it can), I would be more than happy to add your patch.pk3 to the reviews.

Hello Tig, i understand what you mean.
here is the patch (please copy to your server !):
drive.google.com/f...0Q4wH5a2PY/view
Greetings Bockwurst

@BOCKWURST : Patch file is up. It can be found on the review of both maps. Thanks heaps for this!