I'm setting up a new box in my studio running ubuntustudio.   I've downloaded and installed pianoteq from the .tar.xz archive but I'm struggling with organteq - it's packaged as a.7z instead of .tar.xz and my archiving tool (Ark) is complaining that the archive is empty.  I've tried downloading version 1. as well and it's the same issue.  Any suggestions would be welcome.

Many thanks.

Solved - it's clearly a problem with Ark's 7z plugin because extracting using the 7z command line tool has worked fine.

Many thanks.