Please use the supported FLUKA and Flair versions and, with regard to DOSE-H2O scoring, take note of a pending issue that will be solved later this year with the next FLUKA minor release (4-5.2). This means that currently, for DOSE-H2O scoring purpose, you need a fake ancillary file of this kind to be declared in the RAD-BIOL card (this prevents the run failure while the file content is actually of no use for DOSE-H2O).