Hi <BR>I am getting the following error: <BR>System.IO.FileNotFoundException: File or assembly name sieve.dll, or one of its dependencies, was not found. <BR>File name: "sieve.dll" <BR><BR>when I try the following code: <BR><BR>Assembly.LoadFrom("http://localhost/InterfaceTest/bin/sieve.dll") <BR><BR>in my ASP.NET application. <BR>It works if I try "c:....\sieve.dll". Also, the above code works if I put it in a Windows Forms Application. <BR><BR>I have given all assemblies full trust, added asp.net user read/write permissions to the folders. I am totally stumped. Any help is GREATLY appreciated! <BR><BR>RS