OMG !!!
- I FOUND THE PROBLEM !!!
The reason why I was able to post a report and others couldn't is because I COMPLETELY FORGOT to post an instruction from my first post !!!Step 11.2 has just been created. The problem was that the HTML Form had no destination action point (of course not, I didn't post it !!!).
My sincere apologize for this important step as I hope, in the future, NOT to make any mistakes like that again.
In the mean time, I have spent numerous hours to re-type the report_pic.php file since, from different servers's results, it would seems there was several bugs left behind. I guess my test server was too easily configured or something.
Now, everything should be fine as everybody should be able to use it without "any problems" and I can guarantee it.