If your file or document or scorm upload is not working, check the following:

  1. Is there any special characters in the file name? There should be no special characters. 
  2. Check your file upload size on the site. Is the file or SCORM size bigger than the file upload or post size?

  3. Is the course file upload limit smaller than the file being uploaded?

    Go into the course, then go into the course settings of the course you are trying to upload a file.

  4. Check max execution time. It might be that the file upload size is big enough but the server timeout because of the big size and does not complete in time.

    If it takes longer than this time to upload a file you need to increase it on the server where the site is hosted.