SecurityImages troubleshooting

1. The problem may be  related to the permissions of the file imageGenerator.php. Use Joomlaxplorer and browse to the folder where the file is in (components/com_securityimages/plugins/xxx/y.y/imageGenerator.php). Check the permission for the file img.php or whatever file you use and be sure that permissions are set to 755. Many times it is set to 644 and it doesn't allow the CAPTCHA to being bult. It doesn't matter that the folder has permissions set to 755, the file itself must have it. Change form 644 to 755 and il will work....
2. PHP-GD may not be installed on your server, please look first at
   http://wiki.waltercedric.com/index.php/Com_securityimages_a_captcha_framework#Require
   and check your settings...
3. On some host, the  debug output by the script if DEBUG is set to yes. can generate: "Cannot modify header information - headers already send blablabla" errors in the webserver. Deactivate it.
4. Check the overall capabilities of your server by calling: 
   http://yourhost/index.php?option=com_securityimages&task=displayCaptchaByPlugin&plugin=hncaptcha&version=1.0 and look at the eventual error message.

• It may be a Bug, so first search into the tracker at bug.waltercedric.com to see if this issue is known. Please try to be as descriptive as possible: URL of your site, PHP info as a dump, error messages if available. You can enter a new bug in English, German or French, I can't read any other languages sorry.
• If your issue is not a previous or existing Bug, check if you have the latest version running, if not upgrade to the latest, otherwise enter a new bug at bug.waltercedric.com
• Check also in my WIKI for the online documentation.
• There is a lot of valuable people on forums, the official forum is at forums.waltercedric.com which may be able to help You, and give their free time back to the community. For the same reason, if You solve Your problem, publish it on a page/forums/my Wiki/send me a report  to help others.
• Do yourself a favor, use Google, try to copy your error message or summarize your issue in keyword and append 'securityimages'
• 99% of the time, the problems come from the configuration of the server...
• I do a lot of bugs like other developers, while I still do not accept it, it is a reality...but I always try to do my best and I will correct issues as fast as possible...