could not load Subversion python bindings

[Ernie Rael]

(I finally found a very old repository I'd been looking for...)

I'm getting these errors from 'hg', so I'm starting here. Is there a way 
to get more info from mercurial about why this load failed. I earlier 
saw "*** failed to import extension ..." when my hgrc had an error and 
that went away and now I see a bunch of .pyc files. So the load must be 
getting started.

Any help in tracking this down appreciated. I followed instructions from 
Tortoisehg to download the extension and will check there next.

-ernie

$ hg convert -s svn $a
assuming destination l2fprod-common~svn-hg
initializing destination l2fprod-common~svn-hg repository
could not load Subversion python bindings
abort: /a/src_reference/l2fprod-common/l2fprod-common~svn: missing or 
unsupported repository

$ ls *
svn_1.7.5_py27_x64.zip

mercurial-svn-bindings:
insertpath.py  insertpath.pyo  libsvn  svn