Fatal error: NM7.30+WFN

Dear NM users, I installed NM7.30 successfully with gfortran in Windows 7 64 bit circumstance and several test problems ran correctly . However, when I installed WFN, a following error occurred for all test runs: ********************************************************************** Fatal Error: Wrong module version '6' (expected '5') for file 'sizes.mod' opened at (1) gfortran: internal compiler error: Aborted (program f951) ********************************************************************** This error is very similar to that Pavel reported on NM7.20+XPOSE several years ago. Does anyone know how to fix this error? Thanks, Masaki