File extension confusion

Hi all.

Yesterday, when I tried to solve my no ISO play problem I dicovered that the thumbnail shows the wrong file extension / file type. First I suspected that was the problem so I renamed the ISO to filmname.iso instead of the better filmname.DK.2009.iso.

But no effect, it still showed unknown filetype.

Are you reading the file over a network?. In that case, are the permissions correctly set up?. That message can also appear if it cannot open the file at all.

Yes it is via network.

I will look at the permissions and the logins, and also see if its the same with mp3 files.