The server returned an error during upload

[Username 2]

Hi, I'm trying to upload a .zip file around 923 MB under Unofficial patches, but whenever I try uploading the file with or upload the contents in a different archival file format, I get an error message saying "The server returned an error during upload". I attempted to switch to the basic uploader and upload the file, but I can't even begin uploading the file to the server. The archived files weren't corrupted before they were uploaded. The contents included an .exe file, a .txt file, an .rpi file, a few .dll files and a lot of Bink video files. Could there be anything in particular causing this error to happen?