[Plugin: Contact Form 7] CF7 error on line 152 — photo upload conflict in WP3.4

I just tried to upload a weekly photo for a columnist on my site. I use NextGEN Gallery to manage my photos.

Here’s the error I now get trying to upload a photo:

ERROR: aL2.JPG:
Fatal error: Call to undefined function wpcf7_add_tag_generator() in
/home/*****/public_html/*****/wp-content/plugins/contact-form-7/modules/text.php on line 152

If deactivate Contact Form 7, then I can successfully upload photos. Any help would be greatly appreciated.

http://wordpress.org/extend/plugins/contact-form-7/