Merge conflict during commit

Hi,

I've got this message in two different dirs in my svn tree

svn ci -m"my message here"
Sending .
svn: Merge conflict during commit
svn: Commit failed (details follow):
svn: Your file '' is probably out-of-date.
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Either the requested version resource is out of date (needs to be updated), or the requested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).

If I run commit individual files, no problem.
If I use . for those two dirs where I have the message it fails. Note that svn fails to give
me the name of the file. Where should I look for this problem?

This problem started to appear after I created svn:ignore property for these dirs.

Best regards
C.

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| Christophe Prud'homme, http://augustine.mit.edu/~prudhomm
| ICQ UIN: 24560867 Alias: Jesunix
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