volgens Nick Oliver.
Morning!
Now I think this is actually something I may be able to help with, this is all down to the time allowed to upload the file by PHP. Now I think I am right in thinking here that if you follow these steps you should be able to change it and it "should" work.
1. Go in to your Moodle folder (or the folder where your Moodle code is,)
2. Go to your PHP folder and find php.ini
3. If you look for line 126 you should have a max execution limit on there of the 30 seconds, if it is a big file I would bung a few 000s on the end of this to allow it upload this file but remember to change it back afterwards.
ALSO PLEASE ENSURE YOU BACKUP OR MAKE A COPY OF PHP.INI before you make ANY changes.
Hope this helps.
Thanks. Nick.