Found the problem and the fix for it
Original Script
{
Id: 148
Name: "CLASS_DAMAGE_BOSS_TARGET"
Script: <" bonus2(bAddRace2, RC_Boss, getequippedoptioninfo(IT_OPT_VALUE)); ">
},
Fixed script
{
Id: 148
Name: "CLASS_DAMAGE_BOSS_TARGET"
Script: <" bonus2(bAddRace,RC_Boss, getequippedoptioninfo(IT_OPT_VALUE)); ">
},
Dunno if this minor problem can be fixed in the source files of Herc.