Hi I just merged some item mods and since I did some female common clothes appear as invisible. When I merged the esp's using lastest Merge Plugins from nexus site I got a warning saying that I'd have to use the CK to fix a navmesh NAVI:00012FB4. I accepted and the plugins merged successfully. I can run the game without problem except that some female common clothes appear as invisible. The items exist and can be equipped but will make the body invisible. Following the merge I proceeded with the deactivation of the esps that were merged and I don't get any missing master warning ... Here's a list of the plugins I merged as ITEMS.esp : Artifact Disenchanting.esp Artifact Disenchanting - Dragonborn.esp Artifact Disenchanting - Dawnguard.esp Clothing & Clutter Fixes.esp Rebirth Monster - Clothing & Clutter Fixes Patch.esp Immersive Weapons.esp Rebirth Monster - Immersive Weapons Patch.esp Cloaks.esp 1nivWICCloaks.esp Differently Ebony.esp aMidianborn_Skyforge_Weapons.esp 1nivWICSkyCloaksPatch.esp Weapons & Armor Fixes_Remade.esp WeaponsArmorFixes_ImmersiveWeapons_Patch.esp Complete Crafting Overhaul_Remade.esp Complete Alchemy & Cooking Overhaul.esp Pre PaMa CCOR Patch.esp CommonClothes.esp WAF_CCF_SIC Patch.esp PerMa-CACO.esp You can access my mod list / load order at : (sorry link option in forum window doesn't work ) http://www.modwat.ch/u/ratmee Seccond problem : When I open the CK I get a warning saying : FORMS: Chunk size 677 too big in chunk SNAM_ID in form TES4_ID(FF000000) Max size is 512, data is truncated to "Merge Plugin : ... How can I get past this error to finally fix my navmesh ? Anyone can point me to a good up to date guide to fix nav meshes? Thank in advance for any help and I hope I didn't forget anything I had some problems with the forum page and its the 4th time I type all of this ...