Crystal viewer doesn't display charts.

I wrote this VB program that displays Crystal Reports. Somehow, if a report has a chart, the chart doesn't get displayed; everything else works well. Does anyone know what the problem is? This is the code that I'm using:
Set crxReport = crxApp.OpenReport(FileIn.Path & "\" & FileIn.FileName, 1)
frmViewer.CRViewer1.ReportSource = crxReport
frmViewer.CRViewer1.ViewReport
frmViewer.Left = 600
frmViewer.Top = 600
frmViewer.ShowI'm using VB6 SP5 and Crystal Reports Developer 8.5.
Thanks for your help.
poli

Did you put this chart in its own details section? Are you implementing groups in this report.

I didn't write the reports, in fact 'm not very familiar with Crystal - we have couple of report writers. When users display the attached report they don't see the chart. Any suggestions?

Thanks,
poli

It turned out that there was nothing wrong with the report. I was missing a file on the client computer. This article pointed me to the right direction.

http://support.businessobjects.com/library/kbase/articles/c2010058.asp

poli