"captcha" image generation problems and veriword.php#

I'm having problems with veriword.php - which in turn causes problems with any page that uses "captcha" images.

My first step would be login to the manager and disable captcha. However, I can't even login to the manager (http://avinator.com/manager ). I attempted to change USE_CAPTCHA = 0 (from 1) in the modx_system_settings table, but that didn't disable captcha.
1. how would I disable captcha if I can't login to the manager screen?
Additionally, veriword.php fails to generate anything... It was working before, and I haven't changed anything in the code, so I'm not sure what exactly made it stop working. The url is http://avinator.com/manager/includes/veriword.php?rand=1428236831

I have a feeling it has something to do with the gd image generation... but I'm not sure where to look, or how to fix it. Any help would be much appreciated.

ps - ModX rocks. I love it much more than Joomla. I just wish I could disable captcha until I find out what the problem is.

Changing it in the database will disable the feature. There must be some kind of caching issue involved here, most likely in your browser, possibly a misconfigured caching proxy somewhere between you and your site.

should i set USE_CAPTCHA = 0?

or another value?

That's the correct value, but you'll need to fix it in your database table, as well as the assets/cache/siteCache.idx.php file where it likely currently appears as

Change that to 0 as well and you should be able to get in.

thanks.

yup, that did the trick.

i gotta find out what's wrong with the captcha image generation on the server. it's not working at all...

Check your phpinfo output (Reports -> System info, the view link for phpinfo), and see if GD is even enabled in your PHP.