5.1 but before versions do it too. When script is downloading miners, it is downloaded but 7zip has some problem. His window just flashes and is ended, so no miners for me. I am unable to read what 7zip write. Not logged. When I run 7zip just manualy, it start, write help and end. So it is runnable. Antivir is off. I tried to set 7zip to run as administrator, but this is same. So some logging in proces of downloading and uncompressing please.
Have you excluded MM path in youur antivirus?
I switched antivirus off. No realtime protection.
I added to your include file parameter -NoNewWindow for starting 7z process to see what 7z write, and it is this message: Incorrect command line.
I added command to write what is inside $Command before starting 7z, and it looks OK.
x "D:\UTIL\Megaminer-5.1\zm_0.5.7_win.zip" -o "D:\UTIL\Megaminer-5.1\Bin\" -y -spe
Hmmm. So it looks like some setting on my machine do this problem.
I tried run megaminer as administrator, and I give all users all rights for whole folder and subfolders with megaminer. Still nothing. But message Incorrect command line shows, that problem is in calling 7z, but I dont know where. Maybe some invissible end of line, or something. I dont know.
I think you dont have chance to find error by my description. Maybe someone else has same problem and have more info. Lets see.