Thank you for trying so hard JZD. I think sometimes people don't wait long enough to get QB to actually upload, but since you are actually getting an error message, I don't think that is it. I'm guessing you have tried both the red reply and go advanced/manage attachments. I don't think (of course could be wrong) as several spammers post pictures on their first post. Also seems like I have seen several who have actually posted pictures on their first post, but that could have been a while.
I'll send a PM.