Hello! I've been trying to get a MicroWin ISO and have been having some permissions/drive letter errors. I initially used the stable branch with the automatic ISO option but got an error, so I redownloaded a copy from Archive (W11x64_26200.6584) and put it on my C: root using the dev branch. I got a different error but they both are having issues finding the proper drive letter and then as a result it can't find the wim. Seems like this issue is similar (1435097674142716126).
I am using an online admin account with UAC off, the script is running on Powershell 7 as admin, my main drive letters are C/D/F and the ISOs usually get put on E/G (the script also doesn't unmount the image after these errors).