I too use captcha 2.0 and J1.5RC3.and all okok.. I have read all the threads, checked the langauge files, ensured php has gd2 and freetype..
gd
GD Support enabled
GD Version bundled (2.0.28 compatible)
FreeType Support enabled
FreeType Linkage with freetype
GIF Read Support enabled
GIF Create Support enabled
JPG Support enabled
PNG Support enabled
WBMP Support enabled
XBM Support enabled
ensured the tmp directory is writeable
am using cb1.1 on joomla 1.5RC3
but still get no image, just the text for where the image box should show up...
any help would be appreciated.
Erik Wells