Hi!
As the title states, FTB is unable to unpack the downloaded modpack file. As I see it, it is because the files are named in a Windows file structure kind-of- way.
For instance the "New World" MP:

If I open the zip file with my unpacker, there is no folder structure inside. (screen2)

So if I unzip it manually, the files are named as if they were windows folders (screen3)

BTW: I am on Linux.
As the title states, FTB is unable to unpack the downloaded modpack file. As I see it, it is because the files are named in a Windows file structure kind-of- way.
For instance the "New World" MP:
If I open the zip file with my unpacker, there is no folder structure inside. (screen2)

So if I unzip it manually, the files are named as if they were windows folders (screen3)
BTW: I am on Linux.