quick reply works but gives invisible error

[xspazx]

When anyone uses the quick reply they type a valid message and hit post, and it posts the message but it gives a "The following errors occurred when this message was submitted" error with no error in the space underneath that. and then an "ok" underneath that.

I disabled all plugins, I'm baffled. any ideas?

Also I'm not really sure if this is the right forum, I couldn't find a better one. I am sorry if it is mods, please don't delete it and just move it for me. I appreciate it.

thanks in advance to anyone that can solve this problem for me I will be forever grateful.