Hi there I'm delphi coder as a matter of fact I used to do similar jobs just like the one you have mentioned I mean writing database driven applications using the latest engines like those supported by delphi XE5 like FireDac,ADO,DBExpress,ZeosLib and so forth with the most famous RDBMS like ACCESS,SQLSERVER,MYSQL,SQLITE,FIREBIRD,INTERBSE and so forth anyway regarding to your project you can either send me the source code with the sdb3 database and I'll check it for bugs besides I will try to debug it using a map file that can be generated within delphi in order to handle exceptions and checking for bugs within your exe anyway just provide with more information and I'll do my best after all it is your verdict ^^
P.s:I'll reduce the budget if the fix doesn't take much labour ^^
Best Regards