Technote Details :: The captcha image is not generated on the page

When previewing a page with the Capthca wizard applied, instead of the image I get an error message:

Cannot write in captcha folder

This happens because the temporary folder where the captcha images are stored until display does not allow the user running the web server to write files to

To solve this problem you must grant write permissions to the user as which the web server is running for the <site_root>\common\lib\captcha\temp folder. This will allow the creation and storage of the temporary captcha images.