[Wien] plz help required

[arqum hashmi]

Dear Wien2k users,i am using latest version of wien2k. i want to find out the optical properties. i tested one calculation for Al. i got plasma frequency and then i find out the inter and intraband contribution. it worked 
very well and i got all optical properties. But when i tried to find out the optical properties of Boron Nitride and Graphene, for both systems 
its gives 0.000 plasma frequency and for both systems it gives error 
when i include intraband contribution.

Please guide me, that wien2k optical properties is not fully developed for all type of materials?????? i will be very thankful to you.

Thanks and Regards
Arqum Hashmi
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