C:\Program Files\Subversion\repository>svnadmin load reponame < my_dumpfile
'vnadmin: Dump stream contains a malformed header (with no ':') at '

C:\Program Files\Subversion\repository>type my_dumpfile
SVN-fs-dump-format-version: 3

UUID: 3368ba33-4a23-0410-9bc6-db51a66b22a7

Revision-number: 0
Prop-content-length: 56
Content-length: 56

K 8
svn:date
V 27
2006-11-28T08:11:49.249296Z
PROPS-END

Revision-number: 1
Prop-content-length: 113
Content-length: 113

K 7
svn:log
V 14
initial import
K 10
svn:author
V 4
root
K 8
svn:date
V 27
2006-11-28T08:12:20.385753Z
PROPS-END