No se ven los edificios ni los monumentos.

Hola, lo primero quería agradecer la labor que hacéis de culturizarnos con vuestro conocimientos que compartís sin ánimo de lucro, gracias.
El tema que me trae un poco loco tengo instalado el iGO NextGen de versión 9.18.27.71 con el SKin by Pongo en un móvil Android, funciona todo correctamente, menos que no se ven los edificios ni los monumentos salen unas zonas oscuras. Por supuesto que los ficheros están colocados en la carpeta building los dos ficheros 3dc y 3dl.
He modificado el fichero SYS.txt con lo que he recopilado y leído por el foro pero siguen los edificios sin aparecer, pongo una copia del fichero por si alguien me puede ayudarme.
Agradecido de antemano, gracias y saludos.

[3d]
fade_distance_for_car=50
fade_distance_for_guidance_arrow=500
fade_overlap_tolerance=0
road_shield=1
tunnel_mode_disable=1
use_all_building_textures=1

[3d_config]
disable_roadsign_navigation_mode=1
roadsign_bitmaps=0
rotated_roadsigns=0
tunnel_mode_on_delay=-1

[android]
background_navigation_enabled=1
create_sdcard_dir=0
disable_restart_after_phone_call=1
fullscreen=1
ignore_keyguard=1
navigation_audio_stream=3
;STREAM_VOICE_CALL --- Value: 0
;STREAM_SYSTEM ------- Value: 1
;STREAM_RING --------- Value: 2
;STREAM_MUSIC -------- Value: 3
;STREAM_ALARM -------- Value: 4
;STREAM_NOTIFICATION - Value: 5
;STREAM_BLUETOOTH ---- Value: 6
;STREAM_DTMF --------- Value: 8

[android.opengl]
sub_sample_size=4

[attractions]
user_picture_path="/storage/Pictures"

[autorad]
disabled=1
detect=10

[camera.intersection_zoom]
enabled=1

[camera.roundabout]
enabled=0

[commonroutewarning]
blink=1 ;/*default=0*/

[debug]
max_memory=209715200
screenshotfilename="/captures/image_%02d.jpg"
screenshotsavecameraini=0
sync_time_with_local_time=1
skip_eula=1
use_merge=1
enable_buildings="1"

[device]
device_nng_path_primary=""
device_nng_path_secondary_disable=1

;[folders]
;android_secondary_root_path="/storage/41CC-1FFC/addons"
;has_secondary_root=1
buildings="\SD Card\iGO_Pal\Content\building\" (*Esto editadlo en función de dónde esté localizada la carpeta").

[gps]
accuracy_workaround=0
background_navigation=1
location_log=0

[gps.igo_connector]
horizontal_accuracy_treshold=10000

[hnr]
ignored_missing_country_ids=*

[interface]
capture_to_jpeg=1
extra_facilities_button=1
maxzoom2d=6000000
minzoom2d=10
minzoom3d=10
network_enabled=1
save_checksum=0
show_exit_atdestination=1
show_speaker_only_mode=1

[itiner]
pass_via_distance=50
remove_reached_destination=1

[map]
3d_buildings = 1 ; mostrar edificios en 3D
3d_buildings_distance = 3 ; la distancia de los edificios 3D (0 = off, 1 = cerca, 2 = medio, 3 = lejos)
3d_dem = 1 ; mostrar terreno en 3D
3d_dem_detail = 3 ; el detalle del terreno 3D (0 = ninguno, 1 = bajo, 2 = medio, 3 = alto)
3d_landmarks = 1 ; el perfil de suelo 3D
3d_max_tmc_icon_draw_count=5
3d_roads=1
poi_3d_speedcam_icon_overlap=0
poi_distant_distance=200
poi_w=46
poi_h=66
shapes_in_2d="1

;[map.flag_layer]
;route_edit_on_longclick=1 ;(0) long click flag on route and drag!!!
;grab_route_flag_radius= ;(50)
;grab_flag_radius= ;(20)

[naviextras]
boot_service_address=https://zippy.naviextras.com/services/index/rest

[navigation]
enable_offroad_maneuver_icon=0
junction_view_type="mixed"

[navigation.tunnel_view]
always_enabled=1
disable_static_tunnel_near_maneuver=1
distance=1000

[network]
available=1

[other]
use_show_gps_pos_from_state=0

[poi]
multi_poi_overlay=0
picturepoi_folder="/storage/Pictures"
use_mixed_poi_icon=0
use_multi_poi_icon=0

[rawdisplay]
;base_dpi=240
dpi="auto"
;dpi=120
;dpi=160
;dpi=240
;dpi=320
;dpi=480
;dpi=640
driver="gles_2_0_android"
;screen_xy="auto"

[regional]
units=1

[route]
correctness=50
enable_uturn_on_short_segments=1
hnr_ignored_missing_country_ids=*
minimum_hnr_distance_km=100
planned_route_weight=3
user_uturn_penalty=0

[sound]
android_muting_device=0
announce_restricted_roads=1
announce_roundabout_turn_dir=1
csv_voice_enabled=1
dev_buffer_size=200
guidance_distance_offset=50
log_sound_effect_muting=0
media_config=config/devices/media_android.xml
sound_effect_unmute_delay=100000000000

[sound.announcer]
gps_disconnected=0
gps_signal_lost=0

[sound.voice]
traffic_readout_enabled=1

[time_provider.gps_time_provider]
enable=0
priority=0

[tmc-http]
enabled=1
;profile_name=nng-igo-tmc-beckerfull
;profile_name=nng-igo-tmc-igoworld
profile_name="nng-igo-tmc-iphone"
;profile_name=nng-igo-tmc-jci

[vr]
disabled=0

Perdoname ha sido por error, no estoy muy ducho en hacer preguntas en los foros