Chaos Packed File
Also,
You might try DOS 5.0's LOADFIX /? to find out a bit more about the Packed
File Corrupt message.
An alternative fix would be to modify the CHAOS.BAT file. Instead of
having it load "…metashel /i" have it load "… loadfix metashel /i" and
I'll be surprised if that doesn't solve things.
Heck, try switching to your CHAOS directory and typing LOADFIX CHAOS
<enter> and if that works, you could then modify the CHAOS.BAT as above to
make the loading automatic.
Nik