Question

I just downloaded and installed the CAPTCHA plugin on TWiki 4.1.2. When I test it, it only displays a rectangle which has a shade between grey and black. There is no visible character string in the rectangle.

I checked that the Perl GD module is installed. It has version 2.19-3. I also checked the patch to Register.pm. It seeems ok.

I set DEBUG = 1 and get messages in the debug.txt file like:

| 03 Sep 2007 - 18:28 | expiring

where the displayed time is usually 5 minutes after I called the CAPTCHA plugin

There are no messages in the error_log file.

Environment

-- MartinMayer - 03 Sep 2007

Answer

If you answer a question - or someone answered one of your questions - please remember to edit the page and set the status to answered. The status selector is below the edit box.

Sorry, closing this question after more than 30 days of inactivity. Feel free to re-open if needed.

-- PeterThoeny - 18 Oct 2007

Can I please reopen this question as I am having exactly the same problem..

Thanks

-- ChrisCauser - 30 Nov 2007

I think I can answer it now: It's because you need to put the settings in the LocalSite.cfg file. The instructions (I thought) were ambiguous in that I was happy with the defaults so I didn't put them in. Turns out you do.

Hope this helps. Seemed to work for me.

-- ChrisCauser - 03 Dec 2007

My LocalSite.cfg file contains these settings:

$TWiki::cfg{Plugins}{CaptchaPlugin}{Enabled} = 1;
$TWiki::cfg{Plugins}{CaptchaPlugin}{NumberOfCharacters} = 5; # Number of characters on Captcha

It does not work for me. How are your settings?

-- MartinMayer - 28 Dec 2007

Do you have the following line?:

 $TWiki::cfg{Plugins}{CaptchaPlugin}{Characters} = '1234567890'; # Captcha characters, numbers are the safest 

Without it, the plugin doesn't have any characters to add to your captcha image.

-- ChrisCauser - 01 Jan 2008

Sorry, closing this question again after more than 30 days of inactivity. Feel free to re-open if needed.

-- PeterThoeny - 02 Mar 2008