I am kinda at a loss as to why you two have this problem but others no
OK, I got this working by re-re-ordering the pk3s
. Indeed, it conflicted with zlago. I hope the next version of this map won't have to rely on this naming scheme, though. You can easily substitute the names of your shaders by treating the map source as a txt file using find and replace.
ReD, maybe you have some zzzzzlago laying around somewhere? Try moving all other custom maps into a backup folder to exclude any interference. I know, I should have tried this before I posted