What is special about this report?

>In printing of a report I face this error in Foxpro For Dos 2.6a.
>
>"Main.Exe"
>'NTVDM has encountered a system error'
>The Parameter is incorrect
>Choose 'Close' To Terminate the application.
>
>Can somebody help me to sort out this.
>
>Please note that Only in a particular report I face this error.
>