Hi John, the preferred is no the da.SearchCursor, but that is probably not the issue.
Can you add a bit more information for us to look at.
SearchCursor (dataset, {where_clause}, {spatial_reference}, {fields}, {sort_fields})
Can you provide the dataset parameter:
fieldsLry came from where, and did you provide yourself access to the objects.datasource attribute?
Also, when you have parameters that are not being filled out, just helpful to place "" for empty. Just a practice I do, just to make sure. Particularly with the old SearchCursor.