If you using old version on your server, please update it to correct and optimalized v2 version.
There are many features and changes. If you want to using old version, rename model folder zm_iceworld_humans_v2 to zm_iceworld_humans.

Info about changes in  zm_iceworld_humans_v2:
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- Fixed bug when you use button through the wall in small cube kamp.
- Fixed water in pool when you not in the water (at the bottom).
- Fixed many bad textures and some texures are better changed.
- Some visual changes.
- Decreased hp of some breakables (windows, walls and more)
- Realistic breakables and roundings in corridors or doors.
- Fixed some invisible barriers when you can't throw a grenade through barrier.
- Fixed invisible button when you can jump on him. 
- Added one hidden kamp with teleport to tower.
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So use new version with new waypoints, thanks :)!