Have run into issue, probably not .net related. We have a vendor supplied app where they let us call an application from inside of their published application. If I call a app (have tried a C, VB6, and dotnet app) when running as a fat client they launch fine. However, if I am running the vendor supplied app as a ctrix client it will not launch the application (they all attach to a db, but it does not seem they we are even getting that far). It will launch notepad or Query analyzer.