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"java.lang.IllegalStateException: No tree element available or row key not set!" from Seam application

Solution Verified - Updated 2010-05-04T03:48:33+00:00 -

Issue

When expanding and collapsing treeNode component I occasionally get the error:

java.lang.IllegalStateException: No tree element available or row key not set!

Environment

Seam 2.2

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