Getting a fresh checkout of JRDF and caused the following error:
"svn: Can't open file '.../.svn/tmp/text-base/NadicJoinImpl.java.svn-base': No such file or directory"
Which then suggets to run cleanup. Which causes this message:
"svn: Can't copy '.../.svn/tmp/text-base/DyadicJoinImpl.java.svn-base' to '.../DyadicJoinImpl.java.1.tmp': No such file or directory"
So I'm unable to checkout or cleanup and everything is in a locked state.
The problem was that there were two files NadicJoinImpl.java and NAdicJoinImpl.java and OS X is a case insensitive filesystem. The solution is to remove one of the offending files.
In my case: "svn delete https://svn.sourceforge.net/svnroot/jrdf/.../NAdicJoinImpl.java -m "I hate subversion""