Dear all,

I have a starange problem in crystl report viewer export button, when user click on the export button. it becomes hangs . this thing I observed the same report are working fine in XP OS and XP 2003 server, this problem produced only in Window 2008 Server and Vista workstation. one thing more, I have used Multi Threading in crystal report . for performace improvement I called a crystal report asyncrosni calll. It is wonder all reports is show well and only export button create problem I m usiing crystal report 11 release 2 with latest service packs and hot fixes.on further study I found in crystal report 11 release 2 does not fully support window 2008 server etc. kindly let me know if you can guide.
Note:
When I remove the Multi thread it works fine,
thanks in Advance