commit svn: Your file or directory '' probably out-of-date

Hello,

I getting the commit error (Your file or directory '' probably
out-of-date ) when I commit some of the files in my WC directory, for
example:

$ svn ci ast.cpp
Sending ast.cpp
subversion/libsvn_client/commit.c:746: (apr_err=160024)
svn: Commit failed (details follow):
subversion/libsvn_ra_dav/commit.c:486: (apr_err=160024)
svn: Your file or directory 'ast.cpp' is probably out-of-date
subversion/libsvn_ra_dav/util.c:359: (apr_err=160024)
svn:
The version resource does not correspond to the resource within the
transaction. Either the requested version resource is out of date
(needs to be updated), or the requested version resource is newer than
the transaction root (restart the commit).

And in the *same* directory, this ( commit ) works:

$ svn ci -m ast_statement_node_if.cpp
Sending ast_statement_node_if.cpp
Transmitting file data .
Committed revision 1261.

Since I am the only one working on this project, how can the file become
'probably out-of-date' ?

apache's error_log ( for svn ci ast.cpp ):

[Sun Apr 18 19:34:08 2004] [error] [client 192.168.0.20] Could not
CHECKOUT
resource /svn/!svn/ver/1174/cs712/compiler-cs712/trunk/src/ast.cpp.
[409, #0]
[Sun Apr 18 19:34:08 2004] [error] [client 192.168.0.20] The version
resource does not correspond to the resource within the transaction.
Either the requested version resource is out of date (needs to be
updated), or the requested version resource is newer than the
transaction root (restart the commit). [409, #160024]

I'm running subversion-1.0.1 with apache-2.0.49 .

Any thoughts on what I'm doing wrong? Need any more information?

Thanks,

-- 
--------------------------------------------------------------------------------
Steven Knight  steven.knight@unh.edu   IM : skkataim
and tho' We are not now that strength which in old days
Moved earth and heaven, that which we are, we are,--
One equal temper of heroic hearts,
Made weak by time and fate, but strong in will
To strive, to seek, to find, and not to yield.
-- Ulysses by Alfred Lord Tennyson
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