Orange check failling all of a sudden

[DigitalDesigns]

and if I completely remove the check then everything works fine.


*/
class DocumentParser : ElementParser
{
     string xmlText;

     /**
	* Constructs a DocumentParser.
	*
	* The input to this function MUST be valid XML.
	* This is enforced by the function's in contract.
	*
	* Params:
	*      xmlText_ = the entire XML document as text
	*
	*/
     this(string xmlText_)
     in
     {
         assert(xmlText_.length != 0);
         try
         {
             // Confirm that the input is valid XML
             //check(xmlText_); // COMMENTED OUT!
         }
         catch (CheckException e)
         {
             // And if it's not, tell the user why not
             assert(false, "\n" ~ e.toString());
         }