openvas 설치시 openvassd 명령어 오류

openvassd 앞에 설치할 부분을 다 하고 클릭하였다. 그러나
openvassd: error while loading shared libraries: libopenvas_misc.so.6: cannot open shared object file: No such file or directory
이라는 문구가 나왔고
openvas-nvt-sync 을 클릭해보니 아래와 같은 메시지가 나왔다.
openvassd: error while loading shared libraries: libopenvas_misc.so.6: cannot open shared object file: No such file or directory
which: no rsync in (/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin)
[i] This script synchronizes an NVT collection with the 'OpenVAS NVT Feed'.
[i] The 'OpenVAS NVT Feed' is provided by 'The OpenVAS Project'.
[i] Online information about this feed: 'http://www.openvas.org/openvas-nvt-feed.html'.
[i] NVT dir:
[i] rsync is not recommended for the initial sync. Falling back on http.
[i] Will use wget
[i] Using GNU wget: /usr/bin/wget
[i] Configured NVT http feed: http://www.openvas.org/openvas-nvt-feed-current.tar.bz2
[i] Downloading to: /tmp/openvas-nvt-sync.GSJk1Gh2WR/openvas-feed-2014-02-06-11420.tar.bz2
mkdir: cannot create directory `': No such file or directory
[i] Checking dir: ok
[i] Checking MD5 checksum: /usr/bin/md5sum: /md5sums: No such file or directory
not ok
Error: md5sums not correct. Your NVT collection might be broken now.
Please try this for details: cd "" ; /usr/bin/md5sum -c "/md5sums" | less

이것의 좋은 해결방안이 있는가 해서 올렸습니다.
도와주세요^^;;