Scene graph rowlist failed poster load problem

I've been trying to have a default poster show up in my RowList, and in the documentation see that RowList has a field, failedBitmapUri, which is set to the URL of a bitmap to be used for this purpose. However, if I try to set this in the XML file, I get the following output:

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Error creating XML component SeriesDetail
-- Error setting the "failedBitmapUri" field of a "RowList" node

This even happens when setting it to the empty string, which the documentation asserts is the default for this field. Any help or pointers with this would be appreciated.

Greg