We have same problem in our projects.
On Thursday, October 11, 2012, Paul Molodowitch wrote:
> Hey chad - I'm actually currently working on an update to pymel which
> addresses these issues - should be out on github in the next day or two.
>
> A couple questions:
>
> a) What version of maya are you using?
> b) Are you using a "custom" pymel install (pulling from our github repo),
> or are you using the version built into maya?
> c) If you're just using the default maya install of pymel, is there any
> possibility of installing / using a version pulled from github?
>
> In the meantime, you can try monkey-patching
> pymel.core._addPluginNode(pluginName, mayaType) so that it does nothing...
> Should definitely only be used a temporary fix though - it will mean that
> any new nodes from your plugin will just be treated as a 'DependNode' - and
> can create some strange situations where doing:
>
> objectType('myCustomTransform1', isAType='transform')
>
>
> will return different results than:
>
> isinstance(pm.PyNode('myCustomTransform'), pm.nt.Transform)
>
>
> For some background:
>
> When a plugin loaded, pymel needs to check if that plugin provides any new
> node types, and if so, query some basic information about the nodes, so it
> knows how to create a new PyNode class to wrap it. Prior to maya2012, the
> only way to get inheritance information about a node type was by actually
> creating an instance of that node... so it was a dirty little secret that
> pymel actually created and then destroyed instances of those nodes just so
> it could query inheritance.
> This was obviously not a great solution, though, so we got Autodesk to
> include OpenMaya.MNodeClass / cmds.nodeType(isTypeName) in 2012, so now we
> can get the information we need without needing to actually create nodes.
> However, it seems there were some holes that's causing these ghost nodes to
> still being created, so I'm looking to patch these up.
>
> - Paul
>
> On Wed, Oct 10, 2012 at 4:44 PM, Chad Vernon
> <[email protected]<javascript:_e({}, 'cvml', '[email protected]');>
> > wrote:
>
>> It looks like Pymel has some callbacks that monitor plug-in loading. Is
>> there a way to disable this as it conflicts with some of our plug-ins and
>> is causing our scenes to crash.
>>
>> Thanks,
>> Chad
>>
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Sincerely,
Farsheed Ashouri,
ourway.ir
Tel: +98 9388801504
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