Thread:Extension talk:ConfirmEdit/fancycaptcha image not displayed in firefox

I installed ConfirmEdit on Mediawiki 1.16. and set it up to use FancyCaptcha. It works fine in Chrome and IE, but Firefox won't display the captcha image. Firebug tells me: "Image corrupt or truncated". Any ideas? Mecl67 (talk) 09:13, 28 March 2012 (UTC)