Ao carregar tabela para taureliusdataset retorna erro "raised exception class EConvertError with message ''null' is not a valid date and time'".

What code do you have in TFiltro.Create(ACriteria, _AFiltro)?

What is your mapping class?

What is your database data? Have you tried loading a table with only one record?

What is the database you are using?

What is the call stack when the error occurs?