If you are receiving the kernel panic while trying to mount .dmg files and the error makes reference to com.apple.security.seatbelt then you most likely have the wrong seatbelt version for your kernel.

This post explains the problem, how to fix it and links to download the proper file. http://www.infinitemac.com/f5/update...ersions-t1992/

If this is not the case we will need more information as to what the error message says.

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