dpkg error: rename involves overwriting...

[William Morris <william@bangel.demon.co.uk>]

Can anyone tell me how to resolve the following error. I have tried apt-get 
update/upgrade/dist-upgrade to no avail.

debian:~# dpkg -r  --force-all dvipdfm
(Reading database ... 58440 files and directories currently installed.)
Removing dvipdfm ...
Removing `diversion of /usr/share/texmf/tex/latex/graphics/dvipdfm.def to 
/usr/share/texmf/tex/latex/graphics/dvipdfm.def.tetex by dvipdfm'
dpkg-divert: rename involves overwriting 
`/usr/share/texmf/tex/latex/graphics/dvipdfm.def' with
 different file `/usr/share/texmf/tex/latex/graphics/dvipdfm.def.tetex', 
not allowed
dpkg: error processing dvipdfm (--remove):
subprocess post-removal script returned error exit status 2
Errors were encountered while processing:
dvipdfm

Thanks in advance
--
William Morris
william@bangel.demon.co.uk