unsafedisk?

I am trying to backup shogun total war, when i use unsafedisk everything seems fine i get a test exe which i copy to back but when i burn this to disk it will not work? One thing i have noticed is that the backup is only 524MB and the orginal is 544MB, could this be the problem? Somebody help me!!

[crispy]

Mate, did you get my email about it??