[Wien] NiSe2

[hiromasa kaibe]

Dear WIEN-users

I am one of beginner of WIEN2K program. 
I just started for drawing the band structure of NiSe2 (Spacegroup:
205_Pa-3_). At the moment of "x irrep", the message as below appeared.
What does "trsym:cannot find class" mean? What should I do next?
Any comments are very helpful.

hiromasa at komatsu

Commandline: x irrep -up 
Program input is: "" 

trsym:cannot find class
0.007u 0.014s 0:00.02 50.0%	0+0k 0+0io 0pf+0w