Trying to install the zenpack "HTTP Components"

Hello,

I'm new in ZenOSS I need monitoring urls in order to check if the aplication is working, so I'm trying to use the zenpack "HTTP Components" (http://community.zenoss.org/docs/DOC-12940) I'm struggling unsuccessfully so far. 

The installation process throws this error:

ERROR:zen.ZenPackCMD:Error installing ZenPack ZenPacks.community.zenHttpComponent-2.1.egg

Traceback (most recent call last):

  File "/opt/zenoss/Products/ZenUtils/ZenPackCmd.py", line 243, in InstallEggAndZenPack

    fromUI=fromUI)

  File "/opt/zenoss/Products/ZenUtils/ZenPackCmd.py", line 471, in InstallDistAsZenPack

    zenPack, deferFileDeletion, existing = transactional_actions()

  File "/opt/zenoss/lib/python/ZODB/transact.py", line 44, in g

    r = f(*args, **kwargs)

  File "/opt/zenoss/Products/ZenUtils/ZenPackCmd.py", line 357, in transactional_actions

    module = packEntry.load()

  File "/opt/zenoss/lib/python/pkg_resources.py", line 1954, in load

    entry = __import__(self.module_name, globals(),globals(), ['__name__'])

  File "/opt/zenoss/ZenPacks/ZenPacks.community.zenHttpComponent-2.1.egg/ZenPacks/community/zenHttpComponent/__init__.py", line 1, in <module>

    from ZenPacks.community.ConstructionKit.Construct import *

  File "/opt/zenoss/ZenPacks/ZenPacks.community.ConstructionKit-2.0.egg/ZenPacks/community/ConstructionKit/Construct.py", line 4, in <module>

    from ZenPacks.community.ConstructionKit.CustomProperty import *

ImportError: No module named CustomProperty

ERROR:zen.ZenPackCmd:zenpack command failed

Traceback (most recent call last):

  File "/opt/zenoss/Products/ZenUtils/zenpack.py", line 486, in <module>

    zp.run()

  File "/opt/zenoss/Products/ZenUtils/zenpack.py", line 164, in run

    fromUI=self.options.fromui)

  File "/opt/zenoss/Products/ZenUtils/ZenPackCmd.py", line 259, in InstallEggAndZenPack

    raise e

ImportError: No module named CustomProperty

I've given a try to the previous version "ZenPacks.community.zenHttpComponent-2.0.egg" but it does not work...

The zenpack "Constructionkit" is compatible with ZenOSS 4.2.x, but it has been tested with ZenOSS 4.2.4, and we're using ZenOSS 4.2.3. Do you use this zenpack over this ZenOSS version?

This is the environment:

  - ZenPacks.community.ConstructionKit-2.0.egg

  - ZenPacks.community.zenHttpComponent-2.1.egg

  - ZenOSS 4.2.3

  - CentOS 6.4

Thanks in advance!