How to Turn on ASP Debugger
- 1). Select "Administrative Tools" and click on "Internet Information Services (IIS) Manager". Double-click on "Local computer" in IIS Manager and right-click on the "Web Sites" folder.
- 2). Click on "Properties", and then click on "Home Directory" or "Virtual Directory". Select and click on "Configuration" under "Application Settings".
- 3). Click on "Debugging", select the check-box for "Enable ASP server-side script debugging" and click on "OK".
Source...