Unable to start Kloxo on clean install

[Spacedust]

Clean installation on CentOS 6.5:

/etc/init.d/kloxo restart
Loaded plugins: fastestmirror, priorities
Loading mirror speeds from cached hostfile
 * base: sunsite.icm.edu.pl
 * extras: centos.komster.pl
 * mratwork-epel: ftp.icm.edu.pl
 * mratwork-ius: mirrors.ircam.fr
 * updates: sunsite.icm.edu.pl
mratwork-testing-version-arch/primary                            | 4.0 kB     00:00
https://github.com/mustafaramadhan/kloxo/raw/rpms/testing/centos6/x86_64/repodata/primary.xml.gz: [Errno -1] Metadata file does not match checksum
Trying other mirror.
Error: failure: repodata/primary.xml.gz from mratwork-testing-version-arch: [Errno 256] No more mirrors to try.
/usr/sbin/hiawatha not found.

[MRatWork]

It's Centos 6 problem. If you try again in next hours or tomorrow, error will not appear after running 'yum clean all'.