Comment submission seems to be working fine from article pages on www.uxmatters.com, but if I click Preview instead of Send, then click Send on the Preview page, I get this error:
Comment Submission Failed
Your comment submission has failed for the following reason: Invalid request
I've read everything I can find online about this error, but nothing I've been able to figure out how to do has worked. I'm not a developer and am relatively new to Movable Type, so please don't assume any knowledge in directing me to a solution.
I'm requiring visitors to sign in via TypePad to make comments and don't want to use captcha. And I haven't a clue about armor.
Thanks in advance to anyone who can help me solve this problem.
Reported on Movable Type 4.2
I've just exercised this as an anonymous commentor on my MTOS playground installation, and it worked. The playground runs a fresh 4.261, though.