I had a problem with an mp4 file (120M). The document has a revision, but no filename.
I’ve checked uploads dir, there is no file there. I did update document_revisions set filename … file_ext … file_mime_type… and manually upload file to uploads/ dir and all was fine then.
php.ini is OK, I guess, with max upload size set 10 1G, post size also, execution time is 3000 etc.
What else should I check and where to search for error clues? I have searched all over, apache and crm log files, nothing useful there.