Hi,
On the page http://multicommander.com/docs/customcommands_list#mc.filesystem.packfiles I was strugling to make METHOD = "7Zip" work, as it is written like this on the docs, but it wasn't working. Then I changed to METHOD="7z" and it worked.
Maybe its woth expliciting 7z in case someone else also tries to use it.
Thanks
Ahh yes.. Will fix that
it does after the file extensions that the virtual filesytem (packer) plugin have registered in MC.