please help with error message

[timmyzai]

I am trying to post my build thread to the 2 series photo and videos forum.

after I upload the pictures, I get a "your request cannot be processed due to a security token missing or mismatch?" Sorry I can't remember the exact wording.

What am I doing wrong? any help greatly appreciated

[apptest]

Your photos are most likely too large. Try resizing if them to be smaller and see if it works