Is the vis file named gamename.vis ? Set loglevel to info, maybe we get more insight this way.
Yes... (of course it has the real name of the game and it is the same of the .vis file)
Anyway, I did another build and in this new one I have no more errors. The funny thing is that I changed nothing at all.
Another thing: in the old build sometime when I launch the game there were some graphical glitches (the characters disappear randomly, the texts aren't shown, ...).
Do you think it can happen that sometime the build is "bad" for some reason?