Crystal Report (8.5) on win7/windows 2008 64 bit system

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VB

My application is a vb application and I am using Crystal report 8.5. It is working fine on 32 bit system

and 64 bit system of Windows 2003 server. When I run the same application either on win7 64 bit or on 2008

64 bit, report does not open.
I am using vb script to access the database.
Part of the code written in the VB script file is as follows:
Dim objrsRecordSet 'As RecordSet
Dim strSQL 'As String

'**** Open Database Connection using the parameters passed from the main program
Set dbConnection = CreateObject("ADODB.Connection")
dbConnection.ConnectionString = "Provider=SQLOLEDB;Server=" & mstrServer & ";uid=" & mstrUserName _
& ";pwd=" & mstrPassword & ";Database=" & mstrDatabase & ";"

dbConnection.Open
dbConnection.CommandTimeout = 200

dbConnection.Properties("Enable Fastload").Value = True



When i run my application in debug mode it is working fine on windows 7 also. But when i run the application

through the set up by consuming the dll of crystal report then it is not working, in this case report is not

opening.

Guys please help me out with this issue, i will appreciate for your response.