aharui commented on issue #646:
URL: https://github.com/apache/royale-asjs/issues/646#issuecomment-650005618


   10 days ago, I asked about the source code for TreeViewCheckBoxRenderer's 
updateDisplayList.  That is likely a major part of the problem.
   
   It may be also that the dataProvider is not being set correctly.  Check what 
is being assigned to the XMLListCollection.  Explain why the dataProvider is 
already set to an ArrayList instead of an XMLListCollection.
   
   You mentioned an exception creating the XMLListCollection but I don't see 
the stack trace of the exception.  XMLLists may throw a caught exception when 
initializing.


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