It will usually show in the debugger after you press Cancel.

>May I know how to check the line number?
>
>Ben
>
>
>>>>>I get the following error, on my desktop computer, when I print a report. However such error does not show after I build an application or on another computers. The error still shows after I replace the files ReportBuilder.app, ReportOutput.app and ReportPreview.app from an computer without error. Can anyone tell me how to solve the problem?
>>>>>
>>>>>---------------------------
>>>>>VFP Report Output Class
>>>>>---------------------------
>>>>>Data type is invalid for this property.
>>>>>
>>>>>updatelistener
>>>>>Error: 1732
>>>>>Method: setthermformcaption
>>>>
>>>>When the error occurs, press Cancel and open the debugger. Hopefully you will see something that points you in the right direction.
>>>
>>>Hi Tore,
>>>
>>>Thanks for your reply. I follow your instruction but don't find anything helpful.
>>
>>Don't you see which line causes the error?