Error with the editor

Hey everybody, the editor keeps giving me this error whenever I try to open the "Add Model" menu.

System| D3DYXCreateMesh(numFaces, numVertices, pXMC->collisionIndex == COLLISION_MESH_INDEX_NULL ? D3DXMESH_MANAGED : D3DXMESH_SYSTEMMEM, Decl, g_pd3dDevice, &pXMC->MeshData.pMesh) == D3DERR_INVALIDCALL (XMesh.cpp, 2583)

So I have some custom models installed in my editor and level mod media, but they have always worked fine. This is started suddenly and I can't understand what's causing it.

Can somebody please help me?


Hello @zizo . Wich custom models are installed ? Did you install other mods ?

Hello @Reymey, it's a model I made with blender. I understood I had to decimate vertices and faces to under 15k. Now it works fine, thanks.