Excuse me, does this plugin work on Joomla! 1.5 ? I can't get it working for 2 days now

change languagefile.php encoding from UTF8 to UTF8 without BOM, and then it works

CB captcha works just shows red box. GD2 library and Free library all installed properly.
Language files are fine...
Tried setting session handler to none.

This happened when I copied my site over and everything is working except the captcha. Captcha still works on previous site. I saw Beat post somewhere about changing the CB session library location but I don't know how to do this and the topic was locked.

Can someone please help me?

I go to installa this one

The CB Captcha version available for Joomla 1.5 series is only offered for CB doc subscribers.

where is the link to download this plugin!!!!!!
i can´t find it (((((((