PHP 4 Compatibility - array_combine

And you don't even get an error message saying something about installing a TTF font or missing image library?
Can you also check the watchdog log at admin/logs/watchdog and see of there are captcha related errors?
Could you generate images with 3.0-rc1?

thanks for testing and reporting

but admin/user/captcha/image_captcha gives me always a blank page

What do you mean with a blank page?

• no page at all (e.g. everything is white)?
• an empty drupal page (you get a page with header, side bars and stuff, but no real content in the "content" area)

can you check the error log of your webserver/php engine?

how "clean" is your drupal install (how many non-core modules do you have enabled, do you hack modules yourself, ....)?

I mean that everything is white

That probably means the webserver/php engine is not happy with some code. An error log of the server would be handy. With some hosting solutions you have an option to disable/enable (php) error reporting. Mostly error reporting is disabled for security reasons however. Or sometimes you can download the error log through some web interface of your hosting account.

in the meantime you could try to disable modules and see if image captcha gets its settings page back.

Fatal error: Call to undefined function: array_combine() in /var/***/sites/all/modules/captcha/image_captcha/image_captcha.module on line 109

Is this helpful?

This is very helpful indeed. (error messages rule)
Apparently array_combine() is a PHP 5 only function. Good to know (because I use it a lot in CAPTCHA Pack).

A quick fix for you is to put this somewhere in image_captcha.module:

function array_combine($keys, $values) {
  $result = array();
  foreach(array_map(null, $keys, $values) as $pair) {
    $result[$pair[0]]=$pair[1];
  }
  return $result;
}

I'll take a look to fix it in a cleaner way.

patch for avoiding array_combine() in image_captcha

Excellent.