well, seems I f'ed up something in the installation and now in entrenchment it tells me my mesh files differ and I can't join games. to be clear, I uninstalled sins when the final version came out and reinstall it. I didn't delete the rest files though. on the other hand I had already deleted absolutely everything in the beta 3 install, so I should have been fine.
in any case, anything short of another uninstall/ reinstall complete with file removing that I can do? I'm not too keen on it, you know?
edit: strange, now it just did apparently work with someone else. have to check with my friend again.
edit 2: so I tried again. still didn't work with my friend (couldn't join game, as before, or rather he could not join mine, but I'm sure vice versa would have been the same, just as it was earlier). but I could join another, different game with no probs. is it that there are two working versions out there? he was not in beta btw.