Try writing a small VFP program that calls EntreSystemServices from the same machine that ASP.NET is running from. The problem could be with security since the ASP.NET account runs under the user ASPNET unless impersonation is being used.

>We're getting this error in an ASP.NET application.
>
>Exception Details: System.Runtime.InteropServices.COMException: securityservice.recorderror f:\source code\codebook\flash\codebook\common\libs\csession.prg Error in line 379 Class definition ENTRESYSTEMSERVICES.SYSTEMSETTINGS is not found. 1733
>
>We are calling a VFP COM component from ASP.NET and the VFP COM component happens to call another COM component (which is a .NET COM component)
>
>Call path:
> ASP.NET
> calls SecurityService(VFP COM)
> calls EntreSystemServices (.NET COM)
>
>It works fine on the machine that everything is compiled on (iow, the developer machine) but once it's moved to a different box, it seems that the VFP component can't find the .NET COM component registration.
>
>On the test machine the .NET COM component intellisense works in VFP so it appears that the registration is correct.
>
>We've registered the COM component manually and registered the typelib, etc. but this one is dogging us.
>
>Oh, BTW, the VFP COM component is from the COMCodebook libs (that shouldn't affect anything in this scenario, but I mention it for interest's sake).
>
>TIA,
>Chris