No player unit found implies that it is looking for the players sub.
This is just a guess but did you try setting the checkbox "ignore player sub" in the mission menu under parameters?
Be sure to backup your original files first!
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Dual core 2.8 Ghz
HP Media Center running XP pro
2 Gb mem
ATI X1650 w/512 Mb mem
Realtek High Definition Audio
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