@alto55. Thanks for posting. Could you go to the Module Manager, and open the Easy File Uploader module, then scroll to the bottom of the screen, then copy and paste the diagnostic text at the bottom of the screen? It will list the PHP version, mime compatibility info, and server OS version. I will need this information to guide you appropriately.
From what you have posted so far, your PHP mime detection seems to not be working or not setup properly. I can guide you to a solution once I get the diagnostic text.