I checked out release 1.4.5 from SVN.


######################################################
/roundup/roundup1.4.5$ sudo python setup.py install
running install
running build

*** SOURCE WARNING: There are files missing (259/265 found)!
Missing: roundup-admin
Missing: roundup-demo
Missing: roundup-gettext
Missing: roundup-mailgw
Missing: roundup-server
Missing: roundup-xmlrpc-server
Traceback (most recent call last):
  File "setup.py", line 464, in <module>
    main()
  File "setup.py", line 461, in main
    setup(**setup_args)
  File "/usr/lib/python2.5/distutils/core.py", line 151, in setup
    dist.run_commands()
  File "/usr/lib/python2.5/distutils/dist.py", line 974, in run_commands
    self.run_command(cmd)
  File "/usr/lib/python2.5/distutils/dist.py", line 994, in run_command
    cmd_obj.run()
  File "/usr/lib/python2.5/distutils/command/install.py", line 506, in run
    self.run_command('build')
  File "/usr/lib/python2.5/distutils/cmd.py", line 333, in run_command
    self.distribution.run_command(command)
  File "/usr/lib/python2.5/distutils/dist.py", line 994, in run_command
    cmd_obj.run()
  File "setup.py", line 262, in run
    self.build_message_files()
  File "setup.py", line 258, in build_message_files
    msgfmt.make(_src, _build_dst)
  File "/tmp/roundup/roundup1.4.5/roundup/msgfmt.py", line 170, in make
    l = eval(l)
  File "<string>", line 1
    "<tr><td colspan="4"><strong>Bitte beachten:</strong></td></tr>"
                      ^
SyntaxError: invalid syntax
######################################################

Downloading and installing version 1.4.5.1 instead of 1.4.5 worked for me.
You can get it from
http://pypi.python.org/packages/source/r/roundup/


roundup-admin -v still says 1.4.2 as the "binaries" are missing in the
tarballs from python.org in versions 1.4.3, 1.4.4 and 1.4.5.1.


Subsequent installation of SVN version 1.4.6 is ok, too.
Now version number improved:

roundup-admin -v
1.4.6 (python 2.5.2)