> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://docs.clientexec.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# File integrity, corruption or missing files

In your Clientexec installation, there is a file_integrity.php file that resides in the root /clientexec directory. If you view it in a browser, it will show if any files are corrupted or missing.

**Example, checking file integrity:**

http://www.yourdomain.com/clientexec/file_integrity.php

If there are any problems, they will be listed as below:

_File signup.php is corrupt_
_File install.php is missing_
_File templates/Raleigh/signup/signup_header.tpl is corrupt_
_File templates/Raleigh/signup/include/boxsubmitback.tpl is corrupt_

If you notice any files that are 'corrupt' or 'missing', the first action is to re-upload the files in question in binary mode. (Unless you have modified them.).

Always check this file first, even before submitting a ticket, as this will possibly save you a great deal of time in troubleshooting and getting your billing solution back online quickly.