diff --git a/albam/blender_ui/tools.py b/albam/blender_ui/tools.py
index d790bec..f074485 100644
--- a/albam/blender_ui/tools.py
+++ b/albam/blender_ui/tools.py
@@ -344,20 +344,32 @@ def set_image_albam_attr(blender_material, app_id, local_path):
         "re1": (24, 20, 19, 31),
         "rev1": (23, 19, 25, 31),
         "rev2": (24, 20, 25, 31),
+        "re6": (24, 20, 25, 31),
     }
+
+    UNKNOWN_TYPE = {
+        "re0": "0x209d",
+        "re1": "0x209d",
+        "rev1": "0xa09d",
+        "rev2": "0x209d",
+        "re6": "0x9a",
+    }
+
     if not blender_material or not blender_material.node_tree:
         return
-
     for tn in blender_material.node_tree.nodes:
         if not tn.type == "TEX_IMAGE":
             continue
         type = blender_texture_to_texture_code(tn)
-        name = ntpath.splitext(tn.image.name)[0]
+        if tn.image:
+            name = ntpath.splitext(tn.image.name)[0]
+        else:
+            continue
         if not tn.image.albam_asset.relative_path:
             tn.image.albam_asset.relative_path = local_path + name + '.tex'
         tn.image.albam_asset.app_id = app_id
         tex_157_props = tn.image.albam_custom_properties.get_custom_properties_for_appid(app_id)
-        if app_id in ["re0", "re1", "rev1", "rev2"]:
+        if app_id in TEX_COMPRESSION:
             tex_compr_preset = TEX_COMPRESSION.get(app_id)
             if type == 0:
                 tex_157_props.compression_format = tex_compr_preset[1]
@@ -367,6 +379,8 @@ def set_image_albam_attr(blender_material, app_id, local_path):
                 tex_157_props.compression_format = tex_compr_preset[2]
             if type == 7:
                 tex_157_props.compression_format = tex_compr_preset[3]
+        if app_id in UNKNOWN_TYPE:
+            tex_157_props.unk_type = UNKNOWN_TYPE.get(app_id)
 
 
 def rename_bones(armature_ob, names_preset):
diff --git a/albam/engines/mtfw/texture.py b/albam/engines/mtfw/texture.py
index 45e632d..78506ce 100644
--- a/albam/engines/mtfw/texture.py
+++ b/albam/engines/mtfw/texture.py
@@ -317,7 +317,7 @@ def assign_textures(mtfw_material, bl_material, textures, mrl):
             if texture_target is not None:
                 texture_node.image = texture_target
             texture_code_to_blender_texture(tex_type_blender.value, texture_node, bl_material)
-            if tex_index and tex_type_blender.value in NON_SRGB_IMAGE_TYPE:
+            if texture_node.image and tex_type_blender.value in NON_SRGB_IMAGE_TYPE:
                 texture_node.image.colorspace_settings.name = "Non-Color"
         except IndexError:
             print(f"tex_index {tex_index} not found. Texture len(): {len(textures)}")
@@ -343,7 +343,7 @@ def old_assignment(mtfw_material, bl_material, textures, from_mrl=False):
         texture_node.image = texture_target
         texture_code_to_blender_texture(texture_type.value, texture_node, bl_material)
         # change color settings for normal and detail maps
-        if texture_type.value in NON_SRGB_IMAGE_TYPE:
+        if texture_node.image and texture_type.value in NON_SRGB_IMAGE_TYPE:
             texture_node.image.colorspace_settings.name = "Non-Color"