Off_nieuport17_Lewis_ace_t_Esc 38 1917_Georges Felix_Madon.dds is using an N16 skin which breaks in game.
Should be copying an N17 skin not an N16 skin. so copy Off_nieuport17_Lewis_ace_t_Esc 38 1916_Georges Felix_Madon.dds to Off_nieuport17_Lewis_ace_t_Esc 38 1917_Georges Felix_Madon.dds
The error is in BH&H II, we will fix t in 1.09.
Thanks Pol. Sorry for breaking BH&H II. I went back and looked at the message that reported the problem, and I completely misinterpreted it.
Attached is the corrected skin correction script for those running UE or PE. You're safe running it even if you have before. Note that the script will always show the last file being copied. This is it making sure that you have a good version of the Madon's 1917 N17 skin.
EDIT: remove script. Latest version is in a later post.