Everytime I try to view a template (to edit, or just to look at it), I get the 
following error:

 Type: KeyError
Value: 'targetPythonClass'

Traceback (innermost last):

    * Module ZPublisher.Publish, line 114, in publish
    * Module ZPublisher.mapply, line 88, in mapply
    * Module ZPublisher.Publish, line 40, in call_object
    * Module Products.ZenModel.ZenModelBase, line 64, in __call__
    * Module Shared.DC.Scripts.Bindings, line 311, in __call__
    * Module Shared.DC.Scripts.Bindings, line 348, in _bindAndExec
    * Module Products.CMFCore.FSPageTemplate, line 195, in _exec
    * Module Products.CMFCore.FSPageTemplate, line 134, in pt_render
    * Module Products.PageTemplates.PageTemplate, line 104, in pt_render
      <FSPageTemplate at /zport/viewRRDTemplate used for 
/zport/dmd/Devices/rrdTemplates/DNS>
    * Module TAL.TALInterpreter, line 206, in __call__
    * Module TAL.TALInterpreter, line 250, in interpret
    * Module TAL.TALInterpreter, line 711, in do_useMacro
    * Module TAL.TALInterpreter, line 250, in interpret
    * Module TAL.TALInterpreter, line 426, in do_optTag_tal
    * Module TAL.TALInterpreter, line 411, in do_optTag
    * Module TAL.TALInterpreter, line 406, in no_tag
    * Module TAL.TALInterpreter, line 250, in interpret
    * Module TAL.TALInterpreter, line 711, in do_useMacro
    * Module TAL.TALInterpreter, line 250, in interpret
    * Module TAL.TALInterpreter, line 426, in do_optTag_tal
    * Module TAL.TALInterpreter, line 411, in do_optTag
    * Module TAL.TALInterpreter, line 406, in no_tag
    * Module TAL.TALInterpreter, line 250, in interpret
    * Module TAL.TALInterpreter, line 734, in do_defineSlot
    * Module TAL.TALInterpreter, line 250, in interpret
    * Module TAL.TALInterpreter, line 426, in do_optTag_tal
    * Module TAL.TALInterpreter, line 411, in do_optTag
    * Module TAL.TALInterpreter, line 406, in no_tag
    * Module TAL.TALInterpreter, line 250, in interpret
    * Module TAL.TALInterpreter, line 734, in do_defineSlot
    * Module TAL.TALInterpreter, line 250, in interpret
    * Module TAL.TALInterpreter, line 426, in do_optTag_tal
    * Module TAL.TALInterpreter, line 411, in do_optTag
    * Module TAL.TALInterpreter, line 406, in no_tag
    * Module TAL.TALInterpreter, line 250, in interpret
    * Module TAL.TALInterpreter, line 426, in do_optTag_tal
    * Module TAL.TALInterpreter, line 411, in do_optTag
    * Module TAL.TALInterpreter, line 406, in no_tag
    * Module TAL.TALInterpreter, line 250, in interpret
    * Module TAL.TALInterpreter, line 711, in do_useMacro
    * Module TAL.TALInterpreter, line 250, in interpret
    * Module TAL.TALInterpreter, line 426, in do_optTag_tal
    * Module TAL.TALInterpreter, line 411, in do_optTag
    * Module TAL.TALInterpreter, line 406, in no_tag
    * Module TAL.TALInterpreter, line 250, in interpret
    * Module TAL.TALInterpreter, line 734, in do_defineSlot
    * Module TAL.TALInterpreter, line 250, in interpret
    * Module TAL.TALInterpreter, line 426, in do_optTag_tal
    * Module TAL.TALInterpreter, line 411, in do_optTag
    * Module TAL.TALInterpreter, line 406, in no_tag
    * Module TAL.TALInterpreter, line 250, in interpret
    * Module TAL.TALInterpreter, line 677, in do_condition
    * Module TAL.TALInterpreter, line 250, in interpret
    * Module TAL.TALInterpreter, line 279, in do_startEndTag
    * Module TAL.TALInterpreter, line 308, in do_startTag
    * Module TAL.TALInterpreter, line 374, in attrAction_tal
    * Module Products.PageTemplates.TALES, line 227, in evaluateText
    * Module Products.PageTemplates.TALES, line 221, in evaluate
      URL: file:ZenModel/skins/zenmodel/viewRRDTemplate.pt
      Line 39, Column 12
      Expression: standard:'here/targetPythonClass'
      Names:

      {'container': <ZentinelPortal at /zport>,
       'context': <RRDTemplate at /zport/dmd/Devices/rrdTemplates/DNS>,
       'default': <Products.PageTemplates.TALES.Default instance at 
0x2aaab4379998>,
       'here': <RRDTemplate at /zport/dmd/Devices/rrdTemplates/DNS>,
       'loop': <Products.PageTemplates.TALES.SafeMapping object at 0x72931b8>,
       'modules': <Products.PageTemplates.ZRPythonExpr._SecureModuleImporter 
instance at 0x2aaab4379d88>,
       'nothing': None,
       'options': {'args': ()},
       'repeat': <Products.PageTemplates.TALES.SafeMapping object at 0x72931b8>,
       'request': <HTTPRequest, 
URL=http://zenoss.int.oak1.imeem:8080/zport/dmd/Devices/rrdTemplates/DNS>,
       'root': <Application at >,
       'template': <FSPageTemplate at /zport/viewRRDTemplate used for 
/zport/dmd/Devices/rrdTemplates/DNS>,
       'traverse_subpath': [],
       'user': andrew}

    * Module Products.PageTemplates.Expressions, line 185, in __call__
    * Module Products.PageTemplates.Expressions, line 173, in _eval
    * Module Products.PageTemplates.Expressions, line 127, in _eval
      __traceback_info__: here
    * Module Products.PageTemplates.Expressions, line 320, in restrictedTraverse
      __traceback_info__: {'path': ['targetPythonClass'], 
'TraversalRequestNameStack': []}
    * Module OFS.ObjectManager, line 713, in __getitem__

KeyError: 'targetPythonClass' 

It prompts me to submit this to the zenoss community, and I have, but I wanted 
to post on here to see if I can get any responses. We are running RPM version 
zenoss-2.3.0-160.el5 on centos 5 x86_64.

Any help is appreciated.

Thanks,
Andrew




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Read this topic online here:
http://forums.zenoss.com/viewtopic.php?p=31656#31656

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