OpenCart Community

Hello, I have problem witch captcha in Opencart version 1.4.9.1
On 1st site was error when calling captcha. On site contact or in product comments not show image.
On 2nd site work fine.
(preview all in attachment)

I don't know why...

y6ou must have a space in a file somewhere. this does not happen with default install.

OK, but where can i find it?