svndumpfilter3 Subversion 1.4.6, and errors

Hello,

I am beginning to play with the dumpfilter tools and am having trouble.
I want to use svndumpfitler{2..x} (whatever it takes) to pull out
subprojects and tangled code for deposit into a shiny new repository.
My problem is that I am getting errors, and I don't know Python.

I'm using Python 2.5.2 on Win32. The command syntax I'm using is:
svndumpfilter3.py --untangle=/svnrepos/TempWork My/Subproject/Here
<tempwork.full.svn >ccgcommon.filtered.svn

Here's the error I get from svndumpfilter3:

=========
Traceback (most recent call last):
  File "C:\BIN\svndumpfilter3.py", line 822, in <module>
    main()
  File "C:\BIN\svndumpfilter3.py", line 675, in main
    format, uuid, text = read_dump_header(fr)
  File "C:\BIN\svndumpfilter3.py", line 368, in read_dump_header
    assert mo_version
AssertionError
=========

I examined the code, and it is happening when it attempts to read the
dumpfile header. I am using a standard uncompressed dumpfile. Is it
possible that there is a file format change since the creation of the
script that is causing this?

Does anybody else have any experience with this?

--
David Bicking
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