Trouble Using The Create Tool

Hey actually love the idea of the create tool, but I have trouble to get it running. I always get the following error when pressing “save and export”

** main.lua:715: bad argument #3 to ‘format’ (string expected, got nil)
*** stack traceback:
*** [C]: in function ‘format’
*** main.lua:715: in function ‘zip_tool’
*** main.lua:995: in function main.lua:975

Renoise 2.8 B6 64 Bit

Ideas ?

did you tried updating the create tool?
I don’t experience these problems here.

I don’t think that it’s an old version, since I downloaded it four days ago for the first time