Cannot export from CrptWindow, but can from Report Designer?

[andrern2000]

VB 6 with bundled Crystal Reports 4.6.10.

So I have created a .rpt with built-in Report Designer. I'm able to print to window by Crystalreport1. printReport method.
But the when the Export button inside the window is clicked, nothing happens. Then I changed to PrintToFile and specify the filetype to Text, set filename. No working.

Then I go into Report Designer itself, click the Export button and voila!.. The Export dialog box appears.

What's the cause of this?

Note: Same problem with exporting to email (MAPI), but it also works when in Designer environment.

[andrern2000]

Upgrade

Hmm, I don't know what's the problem but upgrading to Crystal Report to v8.5 seems filling my needs. So I won't ask anymore.