Hi polycounters !
I'm stuck on this and I wondered if you could help
I've had the issue described here
http://www.polycount.com/forum/showthread.php?t=86635
and here
http://www.polycount.com/forum/showthread.php?t=94079
I did change lightmaps coord channels and rotated the Uvs (If i don't specular still don't work)and here is the problem I have now

So the trick worked but brought me another problem, and I rather not choose between right specular maps and right normal maps

for the moment i just uncheck the "allow specular lightmaps" in the materials but it's quite a shame since it could bring a lot for our map
thanks !