I just saw the orginal author updated the tool fixing known bugs. I am posting this here as its the most common tool to get an offline custom image into ntlite. It has been quite some time since I have seen an update to this tool.
gimagex 2.2.0
Notable changes this version:
gimagex 2.2.0
Notable changes this version:
- Compiled against the latest WIMGAPI libraries supplied in the Windows ADK for Windows 10 1803.
- Mount and Unmount operations now show progress.
- Added Split WIM support.
- Fixed mouse cursor busy / arrow issues.