When I try to start up my zserver I get the following Traceback (innermost last): File "D:\Program Files\Zope2\z2.py", line 449, in ? exec "import "+MODULE in {} File "<string>", line 1, in ? File "D:\PROGRA~1\Zope2\lib\python\Zope\__init__.py", line 109, in ? DB=ZODB.FileStorage.FileStorage(Globals.BobobaseName) File "D:\PROGRA~1\Zope2\lib\python\ZODB\FileStorage.py", line 301, in __init__ self._pos, self._oid, tid = read_index( File "D:\PROGRA~1\Zope2\lib\python\ZODB\FileStorage.py", line 1298, in read_in dex panic('%s has invalid transaction header at %s', name, pos) File "D:\PROGRA~1\Zope2\lib\python\ZODB\FileStorage.py", line 218, in panic raise CorruptedTransactionError, message ZODB.FileStorage.CorruptedTransactionError: D:\Program Files\Zope2/var/Data.fs h as invalid transaction header at 40013720 I believe the corruption occured because I was uploading data into Zope when my diskspace ran out. I don't have a backup. How can I back out the offending transaction or generally fix my Data.fs?