When editing the $IconLocation variable in MP4/Scripts/MP-Configuration.php (in the scripts folder), the path must be correct to include case sinsitivity. I set mine to seow instead of SEOW and it did not correct the missing icons.
If your like me and you have multiple versions of SEOW running or use a different directory than /SEOW/MP4/ etc on the server then you will need to ensure that you change this line to reflect the appropriate directory.
