>I have customer that faced problem of same user getting different result when run our application using different PC.
>
>We tried to copy the whole application folder to our laptop and run it. We got no problem.
>
>What would be the cause?

I think you would need to provide more information in order for some to be able to help you. If you could provide what exactly is not the same, the lines of code and other relevant information, maybe some would then be able to help you.