Some of the input data is missing "ReplDateGood" child element, that's why you're seeing this exception.Thank you very much for this and I do not think even funny. Not correctly understood before this error message because of this decision began to look elsewhere code.
Workaroud would be to have an <xsl:if /> declaration:Everything turned to the proposed solution search.
We recommend using Razor functions http://docs.composite.net/Functions/RazorBe sure to try. And thanks again to you and all who helped me.
Razor syntax is both less verbose, and much easier to start with compare to XSL.