Purchased Avast Premier 2014 today and download, purchased for 3 computors. Installed fine on all 3. However when entering license key, 1 accepted fine, however the other 2 computor's receive a message stating license key "' signature invalid. The license file is corrupted or modified " Have sent an email to guru's at Avaast but no reply. Anyone else had this issue or know how to fix?
Thank-you
