Nightly build mscore.64bits-2015-02-16-09-36-b25ac8a.tar.bz2 unusable (although 5 hours old)

After downloading mscore.64bits-2015-02-16-09-36-b25ac8a.tar.bz2 from http://prereleases.musescore.org/linux/nightly/ I tried to unpack the tar.bz2 file, but this fails:
---------------------------------------------snip---------------------------------
gtar jxvf mscore.64bits-2015-02-16-09-36-b25ac8a.tar.bz2
mscore

bzip2: Compressed file ends unexpectedly;
perhaps it is corrupted? *Possible* reason follows.
bzip2: Inappropriate ioctl for device
Input file = (stdin), output file = (stdout)

It is possible that the compressed file(s) have become corrupted.
You can use the -tvv option to test integrity of such files.

You can use the `bzip2recover' program to attempt to recover
data from undamaged sections of corrupted files.

gtar: Unexpected EOF in archive
gtar: Unexpected EOF in archive
gtar: Error is not recoverable: exiting now
-------------------------------- snap ----------------------------------------------------------
It seems that mscore.64bits-2015-02-16-09-36-b25ac8a.tar.bz2 hasn't been complete uploaded (and that after 5 hours!!!)