CAPTCHA images don't appear (or display as red X's)

Question:

CAPTCHA images don't appear (or display as red X's)

Answer:

Normally this means that you do not have PHP's GD or FreeType extensions installed. Those extensions are required to generate images from any PHP script, and without them iPanel/iHost cannot generate CAPTCHA images.

You can confirm this by launching http://your-ipanel-url/order/captcha.php in your browser; if you see an error like:

Fatal error: Call to undefined function xxx() in /path/to/ipanel/classes/class.captcha.php on line xxx

...then you are definitely missing the necessary PHP extensions.

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