Run Office Macros by Using Automation from Visual C# .NET

[Phil Bouadana]

http://support.microsoft.com/?kbid=306683

I've implemented a project as described in the knowledge
base article (accessed by above link). However, when I
try to execute the Excel part of the program, I get an
error saying 'An unhandled exception of
type 'System.Reflection.TargetInvocationException'
occurred in mscorlib.dll'

The Access, Word and Powerpoint versions work fine.

Any ideas?