KyienPina Posted December 29, 2012 Report Share Posted December 29, 2012 I recently bought 911 First Responders on Amazon. The regular game works fine. When I try to Open the Mod Installer it says "911: First Responders is not properly installed. Please reinstall."I uninstalled the game and reinstalled, still had the same issue.DxDiag.txt Quote Link to comment Share on other sites More sharing options...
RedHawk504 Posted December 29, 2012 Report Share Posted December 29, 2012 Problem found: Operating System: Windows 8 64-bit. I think that em4 is not compatible with Windows 8. Try to run it in previous versions of windows. Quote Link to comment Share on other sites More sharing options...
