Pushing multiple revisions over http fails

Pushing the first revision works, next one generate:

bzr: ERROR: libsvn._core.SubversionException: ("REPORT request failed on '/public/cups/!svn/vcc/default'", 175002)

Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/bzrlib/commands.py", line 697, in run_bzr_catch_errors
    return run_bzr(argv)
  File "/usr/lib/python2.4/site-packages/bzrlib/commands.py", line 659, in run_bzr
    ret = run(*run_argv)
  File "/usr/lib/python2.4/site-packages/bzrlib/commands.py", line 281, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/usr/lib/python2.4/site-packages/bzrlib/builtins.py", line 594, in run
    count = br_to.pull(br_from, overwrite)
  File "/home/jelmer/.bazaar/plugins/svn/branch.py", line 113, in pull
    self.update_revisions(source, stop_revision)
  File "/home/jelmer/.bazaar/plugins/svn/branch.py", line 152, in update_revisions
    push_as_merged(self, other, rev_id)
  File "/home/jelmer/.bazaar/plugins/svn/commit.py", line 343, in push_as_merged
    new_tree = target.repository.revision_tree(target.last_revision())
  File "/home/jelmer/.bazaar/plugins/svn/repository.py", line 319, in revision_tree
    return SvnRevisionTree(self, revision_id, inventory)
  File "/home/jelmer/.bazaar/plugins/svn/tree.py", line 72, in __init__
    svn.ra.reporter2_invoke_finish_report(reporter, reporter_baton)
  File "/usr/local/lib/svn-python/libsvn/ra.py", line 745, in svn_ra_reporter2_invoke_finish_report
    return apply(_ra.svn_ra_reporter2_invoke_finish_report, args)
SubversionException: ("REPORT request failed on '/public/cups/!svn/vcc/default'", 175002)

bzr 0.9.0dev0 on python 2.4.4.candidate.0 (linux2)
arguments: ['/usr/bin/bzr', 'push', 'svn+https://svn.easysw.com/public/cups/branches/kerberos']

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