Can't download to ramdisk (no replies)

When I try to download a file to ramdisk (Gavotte), the FRD says that there is not enough space on the disk, but it isn't true.
The file was 32MB, disk has 400MB.
Any idea how to solve it?

EDIT: It works OK, when I download the file to a subdirectory. If the root is selected, it throws the above error.