Should missing templates be reported to the user or to the admin

Hi all:

It looks like one of my trackers is being scanned by a search engine.
I want this since I am using it to get performance profiling data.

However the engine thinks that .../issue3?@template=empty is a valid
url. It's not. There is no empty template. As a result I get an email
logged on every hit. The user sees a 500 error with the message:

  An error has occurred
     A problem was encountered processing your request. The tracker
     maintainers have been notified of the problem.

I am considering trapping the NoTemplate error and sending the 
user the following message:

  No template file exists for templating "issue" with template "empty"
    (neither "issue.foo" nor "_generic.foo")

with a 200 or 500 status. I am leaning toward the 500 status.

Does anybody else think this is a good idea? Should this failure be
exposed to the user?

Thanks.

--
				-- rouilj
John Rouillard
===========================================================================
My employers don't acknowledge my existence much less my opinions.