Cant upload to

I go to upload, select my file (45mb btw) and start uploading the file. It goes up to 100% then the webpage switched to a 404 not found page. The file isn’t displayed anywhere on the site.

Solution? This bothers me considering this is my second release of ineu and I still cant upload it.

Bump. I know a few people have this problem but is there no way to resolve it or why its happening?