Blank folder name in downloaded zip file

When I download a folder in Cells 1.6.1 I get a zip file of that folder, however the contents of the folder is inside a black folder, which some programs cannot see.
In 7-zip I get:
image
image

Hi @AJDurant thx for reporting - we should have fixed that in the master already, the standard windows unpacker is not even able to open the zips…