I know Ive had random error pages before when submitting forms multiple times right in a row. Did you try uploading it again and see if it continues happening? Usually if i refresh or try to fill out the form again it goes through fine. In the meantime I will check and see if that happens to me also.

It happened first time I tried also. I submitted then it went ti a page saying content nonexistant. As if page died into a void of nothingness.

Hmm I tried it and had no issues, did you go back to check your gallery to see if it appears now?

Did you check that the fashion is under the size requirements? Maximum file and image size:
2.00 Mb / 3200 x 2400 px (Do not upload Salon sized designs)