Hello,
I made a lot of tests in the last weeks and I still cannot wrap my head around this error.

To begn with, I had some issues with DDUMP: if I put that before the assert and I try to compile in release mode I got "error C2018: unknown character '0x40'". So I used RDUMP in release. In debug mode DDUMP is ok.

bool InsertDocument(ValueMap * header, vector<vm*> * rows){

	Sql query_header(my_mssql_db);
	query_header.ClearError();

	Sql query_body(my_mssql_db);
	query_body.ClearError();

	query_header.Begin();
	query_body.Begin();