I got the error " Ef cannot bracket" in my epw.out file for Aluminum. I was using nbndsub= 4 ,nbndskip= 0, proj(1) = ‘f=0,0,0:l=-3’ with default values for dis_win_max and dis_froz_max. However the epw2 and epw3 finished without errors.
I tried to solve this by some guessed values for dis_win_max and dis_froz_max. Also tried by random projections. But still it is the same.