[Wien] question about half magnets

[Sergio Galindo Torres]

Hello everyone, I'm currently study a half-magnet sample with the wien 97 
package. I have a general question: How the program lift the denerancy of 
the energy levels, that, for the basic hamiltonian, are equal for both the 
spin up and down systems. Witch terms does the hamiltonian consider to 
diferenciate this two cases.

I also have a particular question about an error that I encountered: In the 
Sr2FeMoO6 system the program stops in the lapw1 step. The erros file shows 
this text:

'INILPW' - can't open unit: 18
'INILPW' -        filename: manganita.vsp
'INILPW' -          status: old          form: formatted
'LAPW1' - INILPW aborted unsuccessfully.

How do i solve it ?

Thanks to everyone for your time

(Excuse me my english, i know it is very ugly)

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