Had this working for many months.
Recently moved to new webhosting provider, getting this error:
Contact
Fatal error: Call to undefined function imagetypes() in /home/myusername/public_html/wp-content/plugins/contact-form-7/modules/captcha.php on line 360
Tried this workaround, in case it's relevant:
http://contactform7.com/captcha/
so I put this into wp-config.php
define( 'WPCF7_CAPTCHA_TMP_DIR', '/wp-content/contactform7uploads' );
after creating the new folder with 777 permissions.
Still the same error. Any ideas? Thank you!