[41CL] updating OS modules

[cdmackay]

thanks Monte, that makes sense.

My mistake was to repeat my entire normal process, including the FLCHK? which of course downloaded a new FLDB from clupdate, overwriting the CFLDB that was, at that time, correct.

Presumably if I'd instead immediately done OSUPDT/FLUPD, without another FLCHK?, it would have worked.

Anyway, it was a good exercise, as now I have a better understanding of what's going on

thanks again both.