Require_once error

```
Every time i use
require_once . '/assets/excel/excel_reader.php';

I get the following error:
No data received
Unable to load the webpage because the server sent no data.
Here are some suggestions:
Reload this webpage later.
Error 324 (net::ERR_EMPTY_RESPONSE): The server closed the connection without
sending any data.

There is no problem with the path. When i require any other file in the same
directory, it works.

I'm using excel_reader Version 2.21.
With the codeigniter framework.
```

Original issue reported on code.google.com by `roman.el...@gmail.com` on 14 Sep 2012 at 1:16

Start by reproducing the require_once of assets/excel/excel_reader.php in the reported CodeIgniter setup, then inspect the server error logs and the excel_reader Version 2.21 source. Determine why loading this file produces an empty response while other files in the same directory work. Done means the file loads without the server closing the connection and the cause or required fix is documented.

Written by the indexing model from the issue text.