500 error page

[GoogleCodeExporter]

What steps will reproduce the problem?
1. When I close a question. 
2. When I try to access a closed question.
3.

What is the expected output? What do you see instead?
To be redirected to home page maybe. Instead, when I indicate the reason
why I closed the question and submit I get a 500 error page.
However in home page, the question appears closed.

Again closed question when clicked to view gives me a 500 error page.

What version of the product are you using? On what operating system?
English beta2

Please provide any additional information below.
....

Original issue reported on code.google.com by [email protected] on 29 Jun 2009 at 10:22