I have copied this from another thread, and it worked in my case…
WP Super Cache is a known issue reported several times in this forum – apparently the WP Super Cache plugin is not fully removed when deactivated and creates an ongoing error.
See http://wordpress.org/plugins/wp-super-cache/other_notes/
Dear Jesse11,
I have the same problem using contact-form-7. I have checked your site and I have seen you have solved the problem, Isn’t it?
May I know how did you fix this issue?.
Thanks in advance.
Hi!
I have the same problem. I have disscovered that appears this error code:
</form>
<div class=”ajax-error”>Unexpected token < </div>
Thanks.