If anyone uses xia2 from subversion, this is important. Following an upgrade of xia2 on sf.net the svn checkout instructions have changed - I received this:
Your cloned repository code in project xia2core is now ready for use.
Old repository url: http://xia2core.svn.sourceforge.net/svnroot/xia2core
New repository checkout command: svn checkout --username=graeme_winter svn+ssh://email@example.com/p/xia2core/code/trunk xia2core-code
You and any other developers should do a fresh checkout using the new repository location.
Once I have done this process for myself I will post some new xia2 / svn instructions.