Code:
building hinterland_roads
{
convert_to hinterland_castle_roads
levels roads paved_roads highways
{
roads city requires factions { sicily, byzantium, milan, scotland, turks, spain, venice, england, france, hre, portugal, egypt, mongols, moors, }
{
convert_to 0
capability
{
trade_base_income_bonus bonus 1
road_level 0
}
material wooden
construction 4
cost 1500
settlement_min town
upgrades
{
paved_roads
}
}
paved_roads city requires factions { sicily, byzantium, milan, scotland, turks, spain, venice, france, egypt, mongols, moors, } and hidden_resource roads
{
convert_to 1
capability
{
trade_base_income_bonus bonus 2
road_level 1
}
material wooden
construction 6
cost 3500
settlement_min city
upgrades
{
highways
}
}
highways city requires factions { sicily, spain, venice, }
{
convert_to 2
capability
{
trade_base_income_bonus bonus 2
road_level 2
}
material wooden
construction 8
cost 5000
settlement_min huge_city
upgrades
{
}
}
}
plugins
{
}
}
building hinterland_castle_roads
{
convert_to hinterland_roads
levels c_roads c_paved_roads c_highways
{
c_roads castle requires factions { sicily, byzantium, milan, scotland, turks, spain, venice, england, france, hre, portugal, egypt, mongols, moors, }
{
convert_to 0
capability
{
trade_base_income_bonus bonus 1
road_level 0
}
material wooden
construction 4
cost 1500
settlement_min town
upgrades
{
c_paved_roads
}
}
c_paved_roads castle requires factions { sicily, byzantium, milan, scotland, turks, spain, venice, france, egypt, mongols, moors, } and hidden_resource roads
{
convert_to 1
capability
{
trade_base_income_bonus bonus 2
road_level 1
}
material wooden
construction 6
cost 3500
settlement_min city
upgrades
{
c_highways
}
}
c_highways castle requires factions { sicily, spain, venice, }
{
convert_to 2
capability
{
trade_base_income_bonus bonus 2
road_level 2
}
material wooden
construction 8
cost 5000
settlement_min huge_city
upgrades
{
}
}
}
plugins
{
}
}
Removing the hr_none got it working for my version, with no crash. You can try copy/pasting this code over and see if the roads show up for you.