Troubleshooting a The file /path/to/whmcs/index.php is corrupted Error

[WHMCS John]

Symptom 

After applying the 7.5 update, you may encounter the following error:

The file /path/to/whmcs/index.php is corrupted.

Where /path/to/whmcs/ is the location of your WHMCS installation.

 

Cause

This message occurs when the server environment does not have a sufficiently recent version of the Ioncube Loaders installed so as to meet the compatibility requirements.

This error will occur if you are running Ioncube Loaders version 10.0 or earlier. WHMCS 7.5 requires Ioncube Loaders 10.1.0 or above.

 

Solution

Update the IonCube Loaders installed on your server to version 10.1.0 or higher in PHP 5.6 or 7.0, then attempt the update process again.

Once the update to WHMCS version 7.5 has been completed, you may switch to a PHP 7.1 or 7.2 environment is desired.

It may be necessary to contact your server admin/hosting provider to make these configuration changes.

 

More information: http://help.whmcs.com/m/75601/l/851363-troubleshooting-a-the-file-path-to-whmcs-index-php-is-corrupted-error

[DennisHermannsen]

Also remember to update cron jobs. Our cron job was running with 'php -q', and the default php version is 5.6 which caused the "The file /path/to/whmcs/crons/cron.php is corrupted" error