Belakor

Yes I have the cd key, thank you for responding so quickly! then start by arma II, you mean start it? Because there is no extension section, this one appears only in OA I start with light arma II, I turned off, and then arowhead DLC does not appear yet, I see the dlc private force, British Army ... but not the Czech army. I have no mod installed and there is no command line properties.

No, it does not work, I bought the dlc yesterday and I did not always, I had a dlc code after the transaction and steam it is said that the dlc is purchased ... Furthermore I do not see the list of CAB extensions ...