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Hi All,

I am wondering if anyone has experienced the problem of the file.

sid_meier_s_alpha_centauri_planetary_pack_en_1_1_15734.pkg not opening with the following error.

The operation couldn’t be completed. ( error -1.)

Couldn't open "sid_meier_s_alpha_centauri_planetary_pack_en_1_1_15734.pkg".

I am running macOS Sierra 10.12.6 and downloaded from GOG only yesterday.

Does anyone know of any specific compatibility issues, work arounds, or if I'm just plain old doing it wrong.

All help greatly appriciated.
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