"Keycode DLL not found or invalid keycode"

[Marvin Massih]

Hello,

I want to print a Crystal report from a web-service or ASP .NET application.

I have Crystal Reports 8.0 and Visual Studio .NET 2003 Enterprise
Architect (including Crystal Reports for Visual Studio .NET) installed.

However, as soon as I call

ReportDocument report = new ReportDocument();

, a CrystalDecisions.CrystalReports.Engine.InternalException is thrown
whose message is "Keycode DLL not found or invalid keycode" (translation
mine, I use the German version).

I run the web-service on my own machine, by pressing F5 in Visual Studio.

Any help would be highly appreciated.
I hope I don't have to use the old "CR..." classes from Crystal 8...

Marvin