Map file posting updating error

I am having difficulty posting an update to my map. I go to the edit screen for my map and I put the zip file in the map slot and click submit. (There is currently no file now and I am trying to add one) But for some reason the file does not actually submit. I'll try again later.
Does anyone have any idea why it won't submit? (and it is not too big)

Thanks.

I tried updating again, and it did work this time. (I guess it just had issues earlier) So everything is fine now.