I always get the message "Source code is not available for current statement" when I want to debug an ASP file.
I use Windows 2000 Server and Visual Studio 6 (all service packs are installed.) ASP debugging is enabled in IIS.

I've found the error in MSDN http://support.microsoft.com/default.aspx?scid=kb;en-us;191273
The problem is I even get it in a simple ASP file like this:

<% Option Explicit
DIM test

stop

test = "test"
Response.Write test
%>

I have debugged in the past, but now I always get the error message.
Deleting cache/restarting and unloading IIS doesn't help.