[Zope] Install problem of Debian package

[Sumiya Sakoda]

Hello,

I am using Zope Debian sid package, because I'd like to use Plone.

Today, for other reason, I have to reconstruct Zope environent.
Then, I tried installation by apt-get, but I found there is a
problem of zope-formulator package. It says,

postinst cannot determine the version of python used in /usr/sbin/zope-z2 ... please file a bug report.

After that I get source package and rebuild by myself, but same problem
still remains.
I don't know much about Debian system so that I don't know this is a
package problem or system problem.

Does anyone help me?

TIA
- 
                                  Sumiya Sakoda <sakoda at toyoake.or.jp>