I thought you might be interested in looking at Error when launching ARMA2/OA - 'Data file too short' - 'arma2\addons\anims.pbo'.
https://forums.bohemia.net/forums/topic/132553-error-when-launching-arma2oa-data-file-too-short-arma2addonsanimspbo/?do=findComment&comment=2178207
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