[Wien] run phonon stops after lapw0

[Chandrika]

Hello Wien users,
I generated a supercell of SiC (2x2x2, 64 atoms) using Phonon and successfully ran init_phonon_lapw for it. However,the next stage, which is run_phonon stops after lapw0 and the error message reads 'error in lapw1'.
I have tried this with a smaller supercell (1x1x1, 8 atoms) keeping allother inputs same and could successfully complete run phonon and analyse phonon. 
So why am I having a problem with this larger cell?
If there is any other information I could give to locate the error, let me know.
Please help!
Thank you in anticipation
Chandrika
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