[cod] error by starting server

[R.Steuper]

******* script compile error *******
Could not find script 'mptype\american_airborne': (file 'maps\mp\gametypes\_teams.gsc', line 16)
      mptype\american_airborne::precache();
this error i get, i uploaded the pak5.pk3 and we have the cod-lnxded-1.4.large.tar.bz2 installed

that could couse this error??
 thanks in advanced for the help
Gen.v.klinkerhoven
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