Fast Report Printing Problem

cool_hsn

i have 2 problem in fast report 4 :
i use this statement :
frReport1.preparereport;
frReport1.print;

i have 1000 - 1500 record data and my problem is :

1. sometimes it works and
sometimes it shown errors : "stack overflow"

does anyone know the solution ?

2. when i print some data
sometimes the masterdata cannot print but the header still printing

example :

Data:
Employee : Mr XXX. => Transaction no : - 001
- 002
Employee : Mr YYY. => Transaction no : - 003

Fast Report :
MasterData1
name : [Employee]

DetailData1 => i use subreport
Transaction : [Transaction No]


Result Print :

Employee : Mr. XXX
Transaction : 001
002

Employee : Mr. YYY
Transaction : 003

but sometimes :

Employee : Mr. XXX
---> i couldn't find my master data
Employee : Mr. YYY
Transaction : 003

anyone know the solution?

thx.. anyway