The first error occurs when I use this : https://osdn.net/projects/meshio/downloads/59518/pymeshio-2.7.6.zip/
Second using : http://u7.getuploader.com/Yjo_oi_Neg/
My object has facials , and all other objects export fine.
I can’t supply a blend file because this is work i’m not releasing this is just for a friend.