Hocik

Hi today I reinstall Arma 2 and all expansion and installation OA I wrote error with addons, air00-file not found or corrupted application may not work correctly. And the second time the same mistake and I do not have damaged DVDs (looks like new). computer specs: Operating System: Windows 7 Ultimate Processor: AMD Athlon 64 X2 Dual Core Processor 6000 + 3.12GHZ Memory: 4GB RAM DirectX: 11 Graphics card: GeForce GTX 650 Space: 1TB SATA Thank you in advance for your answer.