[Wien] Gd5Si4 calculations freeze

Dear Wien2k community, I have been trying to perform spin-polarized and non-spin-polarized calculations for the ferromagnetic Gd5Si4. No success in either case, calculations freeze. I use WIEN2k_10.1 (Release 7/6/2010) For the spin-polarized case I use LDA+U, input values are default:

[Wien] optical properties calculations?

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