hg version unknown

[Alexandr N Zamaraev]

I build and install hg from source.
After install version hg is unknown:
[code]
F:\Lang\sf.net\hg\hg>hg pull
...
F:\Lang\sf.net\hg\hg>hg up
...
F:\Lang\sf.net\hg\hg>setup.py build
...
F:\Lang\sf.net\hg\hg>setup.py install
...
F:\Lang\sf.net\hg\hg>hg --version
Mercurial Distributed SCM (version unknown)
[/code]

My environment:
Os Windows Vista Home Basic Ru + sp1
Python 2.5.4 (r254:67916, Dec 23 2008, 15:10:54) [MSC v.1310 32 bit 
(Intel)] on win32
F:\Lang\sf.net\hg\hg>hg log -l1
changeset:   8211:344751cd8cb8
tag:         tip
user:        Matt Mackall <mpm at selenic.com>
date:        Sun Apr 26 16:50:44 2009 -0500
summary:     replace various uses of list.reverse()