Question Question regarding crystal report

[Ali.M.Habib]

We use vb.NET windows form program to pass parameters to crystal report wich execute sql commands

I use .NET 2003, crystal 9, windows server 2000 and SQL server 2000

at the above enviroment the reports application work very well

when migrate to SQL server 2005 , and windows 2003

the applications gave the following errors
- failed to open row set
- operation illegal on linked parameter

I made sure of the connections , I verified the database

I don't know how to fix those errors

any suggestion please