The version 2.5.5 gives 'permission denied' errors when downloading directories with files. That is because the downloaded main directory has 'Ownership & Permissions' set to 'No access', so all subdirectories and files cannot be created within this main directory.
There is no problem with downloading individual files: they get the normal 'Ownership & Permissions'.
I re-installed the previous version, 2.5.4 and that one does not suffer from this problem.
If in the preferences/downloads the option 'Adjust file permissions on download' is NOT selected, then the default permissions RW-R-R are applied to the directories and the downloading is possible without errors. ionic breeze