Server can't find model things, different clients get different errors

I’m getting this really strange errors like these (these are console errors on the server):



 slash/garrus/Garrus.mdl/m_anm.mdl : missmatched parent bones on "ValveBiped.Bip01_Pelvis" 
 slash/garrus/Garrus.mdl/humans\male_gestures.mdl : missmatched parent bones on "ValveBiped.Bip01_Pelvis" 
 slash/garrus/Garrus.mdl/humans\male_postures.mdl : missmatched parent bones on "ValveBiped.Bip01_Pelvis" 
 slash/garrus/Garrus.mdl/Humans\male_ss.mdl : missmatched parent bones on "ValveBiped.Bip01_Pelvis" 
 slash/garrus/Garrus.mdl/combine_soldier_anims.mdl : missmatched parent bones on "ValveBiped.Bip01_Pelvis" 
 slash/legion/Legion.mdl/m_anm.mdl : missmatched parent bones on "ValveBiped.Bip01_Pelvis" 
 slash/legion/Legion.mdl/humans\male_gestures.mdl : missmatched parent bones on "ValveBiped.Bip01_Pelvis" 
 slash/legion/Legion.mdl/humans\male_postures.mdl : missmatched parent bones on "ValveBiped.Bip01_Pelvis" 
 slash/legion/Legion.mdl/Humans\male_ss.mdl : missmatched parent bones on "ValveBiped.Bip01_Pelvis" 
 slash/legion/Legion.mdl/combine_soldier_anims.mdl : missmatched parent bones on "ValveBiped.Bip01_Pelvis" 
 slash/LOKI/LOKI.mdl/m_anm.mdl : missmatched parent bones on "ValveBiped.Bip01_Pelvis" 
 slash/LOKI/LOKI.mdl/humans\male_gestures.mdl : missmatched parent bones on "ValveBiped.Bip01_Pelvis" 
 slash/LOKI/LOKI.mdl/humans\male_postures.mdl : missmatched parent bones on "ValveBiped.Bip01_Pelvis"
Error! Flag "$halflambert" is multiply defined in material "models/
 slash/loki/mch_lgt_base_diff"! Error! Flag "$halflambert" is multiply defined in material "models/
 slash/loki/visor"! 
 slash/tali/talizorah.mdl/f_anm.mdl : missmatched parent bones on "ValveBiped.Bip01_Pelvis" 
 slash/tali/talizorah.mdl/Humans\female_ss.mdl : missmatched parent bones on "ValveBiped.Bip01_Pelvis" 
 slash/tali/talizorah.mdl/Humans\female_shared.mdl : missmatched parent bones on "ValveBiped.Bip01_Pelvis" 
 slash/tali/talizorah.mdl/humans\female_gestures.mdl : missmatched parent bones on "ValveBiped.Bip01_Pelvis" 
 slash/tali/talizorah.mdl/humans\female_postures.mdl : missmatched parent bones on "ValveBiped.Bip01_Pelvis"
 MDLCache: GrandTheftAuto5	revor.mdl needs to be recompiled KeyValues
 Error: RecursiveLoadFromBuffer: got EOF instead of keyname in file materials/models/grandtheftauto5/trevor/shirt.vmt VertexLitGeneric, (*proxies*), (*Clamp*), KeyValues
 Error: RecursiveLoadFromBuffer: got EOF instead of keyname in file materials/models/grandtheftauto5/trevor/shirt.vmt VertexLitGeneric, (*proxies*), (*Clamp*),

and these:



Error! Variable "$detailblendfactor" is multiply defined in material "halo3/halo3elitescc/mp_predator_diffuse_noenv"!
Error! Variable "$detailblendmode" is multiply defined in material "halo3/halo3elitescc/mp_predator_diffuse_noenv"! 
Error! Variable "$blendtintbybasealpha" is multiply  defined in material "halo3/halo3elitescc/mp_predator_diffuse_noenv"!  KeyValues 
Error: LoadFromBuffer: missing { in file  materials/halo3/halo3elitescc/newelite_diffuse.vmt (*VertexLitGeneric*),  (*proxies*), (*PlayerColor*), 
Error! Variable "$blendtintbybasealpha" is multiply defined in material "halo3/halo3elitescc/newelite_diffuse"! KeyValues 
Error: LoadFromBuffer: missing { in file  materials/halo3/halo3elitescc/sp_raptor.vmt (*VertexLitGeneric*),  (*proxies*), (*PlayerColor*), 
Error! Variable "$blendtintbybasealpha" is multiply  defined in material "halo3/halo3elitescc/sp_raptor"!
slash/legion/Legion.mdl/m_anm.mdl : missmatched parent bones on  "ValveBiped.Bip01_Pelvis" 
slash/legion/Legion.mdl/humans\male_gestures.mdl : missmatched parent  bones on "ValveBiped.Bip01_Pelvis"
slash/legion/Legion.mdl/humans\male_postures.mdl : missmatched parent  bones on "ValveBiped.Bip01_Pelvis"
slash/legion/Legion.mdl/Humans\male_ss.mdl : missmatched parent bones on  "ValveBiped.Bip01_Pelvis"
slash/legion/Legion.mdl/combine_soldier_anims.mdl : missmatched parent  bones on "ValveBiped.Bip01_Pelvis"
slash/LOKI/LOKI.mdl/m_anm.mdl :  missmatched parent bones on "ValveBiped.Bip01_Pelvis"
slash/LOKI/LOKI.mdl/humans\male_gestures.mdl : missmatched parent bones  on "ValveBiped.Bip01_Pelvis"
slash/LOKI/LOKI.mdl/humans\male_postures.mdl : missmatched parent bones  on "ValveBiped.Bip01_Pelvis" 
 Error! Flag "$halflambert" is multiply defined in material "models/slash/loki/mch_lgt_base_diff"! 
 Error! Flag "$halflambert" is multiply defined in material "models/slash/loki/visor"!

And from one client (mine) this happens to Pointshop Player Models:

And from another client it’s like this:

Please help, this is getting impossible to work with