7-zip unspecified error halting autounattended install in Win Toolkit Posted June 18, 2014 I get two 7-zip unspecified errors that pop up when the installation adds addons flashplayer activex and plugin's by Reaper. This halts unattended installation. I used other addons from him that work fine. Those 2 halt the automation, any ideas? The first 2 in the pic caused this pop-up error. Hope these forums are alive.