Generic 500 error message
DotNetted servers are configured to give a full error
message to ensure you the have maximum information
when debugging your scripts.
However, dependent on your local browser settings
when your .asp / .net scripts error you may still see the
generic '500 Error' - if so you need to change a setting
in Internet Explorer to allow you to see the full
detailed error message :
Open up Internet explorer,
Choose 'Tools' from the top menu,
Choose 'Internet Options' from the drop down menu,
Click on the 'Advanced' tab,
Scroll down until you see a tick box for 'Show friendly
HTTP error messages',
Make sure this box is Unticked.
You will now get the full, detailed error message
from your browser when one of your scripts fails.