I have a tested Rocks configuration with:
fpconst-0.7.1
pyparsing-1.4.7
SOAPpy-0.11.6
twisted-2.1.0 (twisted.web-0.5.0)
zope.interface-3.0.1-2
I also have an Ubuntu configuration with:
fpconst-0.6.0 (inside python-soappy)
pyparsing-1.3.3
SOAPpy-0.11.3
twisted-2.2.0 (twisted.web-0.5.0)
zope.interface-3.2.1
For a CentOS 5 installation, I have:
fpconst-0.7.2
pyparsing-1.4.5
SOAPpy-0.11.6
twisted-2.4.0 (twisted.web-0.6.0)
zope.interface-3.0.1
Hope this helps,
-Daniel