From: <forums_at_java.net>
Date: Tue, 09 Nov 2010 01:09:42 -0800
From what I know, unknown file types can be a result of corrupted file
associations in the registry. But there are software able to decipher the
code and display/execute, view or preview the file. It's not uncommon and
I've read it in this guide on how to open unknown file [1] type.