[root@radiowave rpm]# vzyum 401 install yum
exec /usr/bin/yum -c /vz/template/centos/4/i386/config/yum.conf --installroot /v                                                                                                 z/root/401 install yum
There was a problem importing one of the Python modules
required to run yum. The error leading to this problem was:

   /usr/share/vzpkgtools/vzrpm43/lib/python2.4/site-packages/rpmmodule.so: wrong                                                                                                  ELF class: ELFCLASS32

Please install a package which provides this module, or
verify that the module is installed correctly.

It's possible that the above module doesn't match the
current version of Python, which is:
2.4.3 (#1, May 24 2008, 13:57:05)
[GCC 4.1.2 20070626 (Red Hat 4.1.2-14)]

If you cannot solve this problem yourself, please go to
the yum faq at:
  http://wiki.linux.duke.edu/YumFaq

[root@radiowave ~]# vzyum 202 install yum
exec /usr/bin/yum -c /vz/template/centos/4/i386/config/yum.conf --installroot /vz/root/202 install yum
rpmdb: Program version 4.3 doesn't match environment version
error: db4 error(-30974) from dbenv->open: DB_VERSION_MISMATCH: Database environment version mismatch
error: cannot open Packages index using db3 -  (-30974)
error: cannot open Packages database in /vz/root/202/var/lib/rpm
Traceback (most recent call last):
  File "/usr/bin/yum", line 29, in ?
    yummain.main(sys.argv[1:])
  File "/usr/share/yum-cli/yummain.py", line 85, in main
    base.getOptionsConfig(args)
  File "/usr/share/yum-cli/cli.py", line 163, in getOptionsConfig
    disabled_plugins=self.optparser._splitArg(opts.disableplugins))
  File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 164, in _getConfig
    self._conf = config.readMainConfig(startupconf)
  File "/usr/lib/python2.4/site-packages/yum/config.py", line 685, in readMainConfig
    yumvars['releasever'] = _getsysver(startupconf.installroot, startupconf.distroverpkg)
  File "/usr/lib/python2.4/site-packages/yum/config.py", line 755, in _getsysver
    idx = ts.dbMatch('provides', distroverpkg)
TypeError: rpmdb open failed