Mercurial installation issue

We've installed mercurial 1.4.1 and python 2.6.2 on a solaris 8 box. Now some hg commands work as expected, others fail.

I was able to initialize a repository (hg init) and add a file (hg add) but the committing (hg commit) leads to an error message:

abort: could not import module found!

I need a hint where to look - I'm not a python expert, is this missing found module part of the python distribution or does it belong to mercurial? Any idea how to fix it?

Edit

Thanks for your comments - hg debuginstall runs fine, just reports one problem - I didn't set a username in any of the config files. Can't believe that this causes the actual problems...

Edit

--traceback was a good hint!!

Here's the last line (can't copy&paste):

ImportError: ld.so.1: 开发者_JS百科hg: fatal: relocation error: 
 file:/usr/local/lib/python2.6/lib-dynload/zlib.so: 
 symbol inflateCopy: referenced symbol not found

The zlib.so library is present was installed with either the python or mercurial package.

Looks like I'm not the only one: here's the same problem with python 2.5 on solaris 10

You need to install the zlib library for your system (libz.so).

Check your LD_LIBRARY_PATH settings.

If it is pulling libz from an odd place you will need to fix it so that it is pulling from /pkg/local/lib first

I was seeing this:

ldd /pkg/local/lib/python2.7/lib-dynload/zlib.so
        libz.so =>       /import/wgs/lib/libz.so 

But now its working for me.