Sudden svn conflict during copy

Hi all,

Having just tried a pedestrian maven release, the release plugin
suddenly fails as per below.

The tag .../tags/patricia-db-2.0.5 doesn't exist, and the parent
directory does. I can see no logical reason why this particular attempt
to tag should fail.

The only thing that changed recently is that the server was upgraded to
svn v1.4.6.

Does this ring any bells for anyone?

[INFO] Executing: svn --non-interactive copy --file
/tmp/maven-scm-941611293.commit .
https://svn.domain.net/svn/fma/fma/patricia-db/tags/patricia-db-2.0.5
[INFO] Working directory: /home/gatekeeper/minfrin/src/fma/patricia-db
[INFO]
------------------------------------------------------------------------
[ERROR] BUILD FAILURE
[INFO]
------------------------------------------------------------------------
[INFO] Unable to tag SCM
Provider message:
The svn tag command failed.
Command output:
svn: Commit failed (details follow):
svn: COPY of patricia-db-2.0.5: 409 Conflict (https://svn.domain.net)

Regards,
Graham

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