For those of us who might not be familiar with "Wein2k":
The program package WIEN2k allows to perform electronic structure calculations of solids using density functional theory (DFT). It is based on the full-potential (linearized) augmented plane-wave ((L)APW) + local orbitals (lo) method, one among the most accurate schemes for band structure calculations. WIEN2k is an all-electron scheme including relativistic effects and has many features. It has been licensed by more than 1500 user groups.
I would suggest your best bet is to contact the authors at the URL above.
Or ask your instructor