Dear all I am getting the following error message, which I find quite confusing 68 | use amg_prec_mod | 1 Fatal Error: Mismatch in components of derived type '__vtype_psb_c_par_mat_mod_Psb_c_par_mat_type' from 'psb_c_par_mat_mod' at (1): expecting 'bldext', but got 'aclsum' compilation terminated. from mpifort -v mpifort for MPICH version 3.4.3 Using built-in specs. COLLECT_GCC=/opt/gnu/12.1.0/bin/gfortran COLLECT_LTO_WRAPPER=/opt/gnu/12.1.0/libexec/gcc/x86_64-pc-linux-gnu/12.1.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc-12.1.0/configure --prefix=/opt/gnu/12.1.0 --enable-languages=c,c++,fortran Thread model: posix Supported LTO compression algorithms: zlib gcc version 12.1.0 (GCC) What might the compiler be complaining about? Where can I find additional info on what to do? Any help greatly appreciated Salvatore