In Windows server 2008 a message from third party is not displaying any ideas please?

Question

In windows 2008 server i am running a Windows service application which  is built in visual studio 2.0  c#,internally the windows service is calling third party DLL, the thirtd party API throws a message(just like error message key not found ) if a hard ware key is not attached to the system.

It is working fine in win 2003,xp but not in windows 2008 any ideas please