Hello,
If you look in the .out file in the end it complains that neuxsc-ind_72.bin could not be loaded. This is because you requested the old 72-group low-energy neutron cross sections, which is no longer distributed.
Once you fix this (e.g. comment out the LOW-NEUT card), you’ll see that in the 260-group cross sections the temperature is 296 K instead of 293 K, so you’ll have to replace 293 by 296 K in your LOW-MAT cards.
This should kill the problem.
Cheers
Cesc
PS: flair spots an empty region (VC5). Delete it.
PS2: neutrinos are discarded by default anyway. The corresponding DISCARD card is redundant.
PS3: See also this comment: Running an example with IRRPROFI