[Zope] Zclass and manage_clone (a bit long)

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hi all

i followed the example of cloning apps to make a product in ZCMG.  i can
successfully do it.

however, when i tried doing the same inside of a ZClass, i can't clone

the builder dtml-method is the same.

<dtml-call "manage_clone(Disc,REQUEST['myid'],REQUEST)">

disc is a folder containing other objects (dtml method, dtml document, zsql
method)

the 'tree 'view:
control_panel/
	products/
		myproduct
			myZClass
			class constructor
				Disc(folder)
				builder

here's the error and traceback
The object Disc does not support this operation 
Traceback (innermost last):
  File /usr/local/Zope/lib/python/ZPublisher/Publish.py, line 214, in publish_module
  File /usr/local/Zope/lib/python/ZPublisher/Publish.py, line 179, in publish
  File /usr/local/Zope/lib/python/Zope/__init__.py, line 202, in zpublisher_exception_hook
    (Object: A1)
  File /usr/local/Zope/lib/python/ZPublisher/Publish.py, line 165, in publish
  File /usr/local/Zope/lib/python/ZPublisher/mapply.py, line 160, in mapply
    (Object: build)
  File /usr/local/Zope/lib/python/ZPublisher/Publish.py, line 102, in call_object
    (Object: build)
  File /usr/local/Zope/lib/python/OFS/DTMLMethod.py, line 150, in __call__
    (Object: build)
  File /usr/local/Zope/lib/python/DocumentTemplate/DT_String.py, line 502, in __call__
    (Object: build)
  File /usr/local/Zope/lib/python/DocumentTemplate/DT_Util.py, line 335, in eval
    (Object: manage_clone(Disc,REQUEST['myid'],REQUEST))
    (Info: manage_clone)
  File <string>, line 0, in ?
  File /usr/local/Zope/lib/python/OFS/CopySupport.py, line 284, in manage_clone
    (Object: A1)
  File /usr/local/Zope/lib/python/OFS/CopySupport.py, line 377, in _verifyObjectPaste
    (Object: A1)
Copy Error: (see above)


another side note,
it seems that the distribution tab does not wok.  i followed the example in
ZCMG, and exported a product.  but when i uncompress the product.tar.gz into
zope, i dont see the product even after restart.

also tried exporting the product into zexp, but i cant import.  got error
Error Type: TypeError
                             Error Value: ('len() of unsized object', , None)

traceback


thanks in advance.  



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