One of the teachers is having proble with uploading pdf file (177kb and the limit is 8mb). After choosing the resource from desktop he is getting an error window with "File not specified." This has happened on more than one computer and he hasnt had these problems before. Also, I have logged in as both administrator in one class and teacher in his class and I was able to upload the file in few seconds.
What couls cause the error.
Thank you for your help.