unsealed vertices are a no-no for wings. As wings is based on certain internal structure that works best with solids.. But can deal with open meshes and stuff, with some tricks.
Opened now.
Yup. Do(at Ultimate Unwrap) a 3dtools/weld model, and loads ok.
But one note. Your png texture has transparency information. It makes faces looks like reversed, specially in wings if wires viewing are on. It fooled me in the very first second, though. Delete the material to check what i mean.
The outside of the A letter is trasnparent, but it seems you didnt uv mapped as would have desired...
Also, there are extra errors in the mesh. While is triangulated, look like there are some quads...not really quads, but some weird stuff. vertex colinear with edges, but that you need some moving , editing and disolve that may wreck the uvmapping if not done carefully. This is better to check before uvmap.
I am not gonna solve em , also as I see is just a test emsh.
The errors can be have well introduced in the ai font import at UU, or another modeler, or just when you did the autosmooth unwelded some...I dunno.
the errors, I paste you here so you see (are very easy to fix in wings) :
http://xs.to/xs.php?f=error1.jpg&h=xs73&d=06120http://xs.to/xs.php?f=error1b.jpg&h=xs73&d=06120By no means is an error of Wings.
use also OBJ as a transfering format. Is much better, usually.