ArcObjects error Exception from HRESULT: 0x80042601

[ZacharyKing]

I am attempting to use ArcObjects to add a feature class to an existing replica as outlined in the code sample provided via http://resources.esri.com/help/9.3/ArcGISDesktop/dotnet/da79f58c-971a-454e-bc52-974c2c47e26a.htm#Ove.... After compiling the code, ArcMap launches and I am able to add the button however, the following error is thrown: System.Runtime.InteropServices.COMException: 'Exception from HRESULT: 0x80042601'. The ArcObjects error code would convert to -2147211775 though when searching, this returns no results.

[DuncanHornby]

Have you confirmed that both workspace and replicaname are both valid and point to locations that exist, there appears to be not testing and error trapping in your code?