Another caveat for those running Windows 10 - installing this mod will be the first during STEP: Core where you must change NexusClientCLI.exe to run in Windows 8 compatibility mode. Otherwise, Mod Organizer will wait forever for the program to execute. Step by step guide: 1. Open Windows Explorer 2. Browse to your Mod Organizer directory (If you install it in the default directory, go to %ProgramFiles(x86)%\Mod Organizer) 3. Open the NCC sub-directory 4. Right-click the NexusClientCLI.exe, choose Properties 5. Choose the "Compatibility" tab 6. Check the checkbox for "Run this program in compatibility mode for:" 7. Choose Windows 8 in the drop down box just below 8. Click the Apply button 9. Click the OK button NCC installations should now work. EDIT: It has since been revealed that not all Windows 10 users are affected. That said, some percentage of other users will run into this issue. I want to find a better solution to the problem, so please reply with hardware specs. EDIT 2: I've found an existing thread for the issue I originally needed to solve. Link: Please Help - Made The Switch To Mod Organizer And External Installer Never Finishes (Solved Thanks To Grant)