[AndrewD]

A number of people have reported that they are having problems with file uploads, with the message:

Your submission could not be processed because a security token was missing.

If this occurred unexpectedly, please inform the administrator and describe the action you performed before you received this error.

This is probably a result of trying to upload files which are larger than your php settings allow.

If you experience this error, go to vb/admincp/maintenance/php info. Look in the section "PHP Core", for the following values:

post_max_size

and

upload_max_filesize

If the value of post_max_size is smaller than or the same size as upload_max_filesize, then things go badly wrong in ways that vbulletin/LDM cannot handle.

Solution - make sure that post_max_size is set to a larger value than upload_max_filesize in the php.ini file.

If you've no idea what I'm talking about, speak to your server administrator.