I was also getting the "Attachments exceed maximum size limit" error, as I think some of the images were too hi res, so by changing line 154 and 312 in the XML file, from:
max_post_size: (1536 * 1024),
to
max_post_size: (3072 * 2048),
Allows for higer res images to be to be uploaded... However I'd not go crazy with this figure otherwise the uploads will be huge, take an age to upload, eat your bandwidth and probably cause the server to have to work pretty hard resizing all the images!
Thanks again
