Problem Export - Works on dev computer, not on other ones...

I have a problem exporting report with Crystal Report for Visual Studio .NET 2002.
In fact, with the computer I used to program, the export works fine. I've tried to get my .NET project on another computer, and there the export doesn't work...
The error occurs on the line : report.Export(); When I catch it, it says "Echec de connexion", which means "Connection failed".

Here are my config :

- The "good" computer : Win 2000 Server with last SP's, VS.NET 2002, Crystal Report for VS .NET

- The "bad" one : same one...

I also tried on an Xp computer, and it doesn't work either...

I've tried the Modules utility from Business Object to see if DLL's were missing on "bad" computer, but it's quite hard to define ('have to see the DLL under aspnet_wp.exe process, haven't I ?)

I install all services packs and hotfixes for Crystal Report for VS .NET 2002...It doesn't change anything.

So, if you have any idea, it would be welcomed !! Thanks.Check to make sure all the required Export dlls are installed on the "bad" computer.

Each Export format (Excel, pdf, etc) and each Export Destination (Aplication, Disk, etc) has to have a dll installed on the machine it's running on. If, for example, you can export to pdf, but not to Excel, your problem may be that the dll required for Excel Export is missing.

In Crystal Reports 8.5, there's a file called runtime.hlp that tells exactly what dlls are required depending on what your application uses.

(Ex. For CR 8.5 and Win2k, my Excel export dll is: C:\WINNT\Crystal\u2fxls.dll and my dll for Exporting to Application is: C:\WINNT\Crystal\u2dapp.dll)