Thanks for quick reply, Philip. Problem disappeared now, I don't know how. When I run "svn co http://svn.wildfiregames.com/public/ps/trunk/" I get "Checked out revision ####.". If I run "svn up" from this directory I get "Skipped '.'", so I run "svn up" from nested "trunk" directory and it returns "At revision ####.". I'm sure, that yesterday I had fully checkouted version because I runned checkout and update number of times and saw "At revision ####." messages. Today I updated to new version, maybe some problems fixed now. Also I downloaded alpha version build from PPA, it seems like single package, but maybe some dependencies needed for building also was downloaded. Finally, I changed "0 A.D." directory to "0ad" in path to source code, maybe some problems was caused by whitespace in path. In any case I compiled and runned game without problems today. Thanks for the help