problem in running hmetis with fix file when no of partitions are greater than 2

hmetis is not running when I am fixing some vertices into some partitions and no. of partitions are greater than 2.
e.g.
my hgr file is
test.hgr
4 7
1 2
1 7 5 6
5 6 4
2 3 4

my fix file is
fix.txt
0
-1
-1
-1
-1
-1
1

now I am running hmetis test.hgr fix.txt 3 5 10 1 1 3 0 8
It is not able to run. This is happening only if the no of partitions are greater than 2 otherwise it is running fine.
Is this the bug in hmetis or am I going wrong somewhere? Can anyone please tell?