[Zope] re Zope's problerm?

[Victor Zhai]

Hi,
When I creat zope products with zclasses, 
First I create a product and with the specified name: "HRsystem" under the directory of Control_Panel/Products Folder. Then Click "Add" and then "Generate", Go to "HTsystem" Product Folder and create a ZClass by selecting "Z Class" form the product add list.
I select all of the "Base classes" that listed ....

Then when I want to add a instance of "HRsystem" under /Victor directory.Zope give some errors like this:

Zope Error

           Zope has encountered an error while publishing this resource. 

           Error Type: TypeError
           Error Value: argument name was ommitted



           Troubleshooting Suggestions

                The URL may be incorrect. 
                The parameters passed to this resource may be incorrect. 
                A resource that this resource relies on may be encountering an error. 

           For more detailed information about the error, please refer to the HTML source for this page. 

           If the error persists please contact the site maintainer. Thank you for your patience. 


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But when I select none of the base classes.It work properly..
regards
  	Victor zhai









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