I have your problem fix, open your
system/LineageMonster6.int
system/LineageMonster7.int
and place them there:
[archer_horse]
WalkAnimName[0]=walk
RunAnimName[0]=run
WaitAnimName[0]=wait
AtkWaitAnimName[0]=atkwait
Atk01AnimName[0]=atk01
Atk02AnimName[0]=atk01
Atk03AnimName[0]=atk01
spatk01AnimName[0]=spatk01
spatk02AnimName[0]=spatk01
picitemAnimName[0]=pickitem
swimAnimName[0]=swim
DeathAnimName[0]=death
DeathWaitAnimName[0]=deathwait
CastShortAnimName[0]=CastMid
CastEndAnimName[0]=CastEnd
MagicShotAnimName[0]=MagicShot
MagicThrowAnimName[0]=MagicShot
MagicNoTargetAnimName[0]=MagicShot
CastMidAnimName[0]=CastMid
CastLongAnimName[0]=CastLong
NpcSocialAnimName[0]=spwait01
NpcSocialAnimName[1]=spwait01
NpcSocialAnimName[2]=spwait01
NpcSocialAnimName[3]=social01
you need to find all the [NAME]