> ./faim ../dat/freetest > faim: ../../../libgfortran/generated/matmul_r8.c:170: matmul_r8: Assertion > `a->base == 0' failed. This looks like a old bug, which did arise only in some matrix multiplications, and was fixed some time ago. How old is the gfortran version you're using? (please post, e.g., the output of "gfortran -v"). FX