@Fomorian: Out-of-sync errors are the eternal bugaboo of Ashes, RiFE, FF, and to some degree even basic FFH. Probably as close to a solution as exists is to try that PitBoss thing that lets you essentially play-by-email, and if that sounds very unfortunate, it is. But so many, many things can cause OOS.
Thanks, although I knew this already, having combed through the net for more or less a year.
Just thought, since it occures only with the actual svn and not with the 14.11 it might be an interesting information, considering that not everybody who would delight in the game might be willing to try the svn, it might become a far more wide spread problem with a new official release, which would just be bollocks, since this mod is by far the best version of Civ (as far as I'm concerned) that I have ever played.
ATM we stick to playing 14.11 (since steam on ubuntu seams not to work for me. Oh, well...)