[Lazarus-ccr-general] Error compiling older code...

[Tom L. <ne...@gm...>]

After too many years, I'm trying to rollup a lot of fixes and release a new
version of EpikTimer. In the process, I ran into a compile error with the
demo program that I don't understand. Here are the declarations in
epiktimer.pas:

type
  TickType = Int64;

  TimebaseData = record
     TicksFrequency: Ticktype;
     ...
  end;

TEpikTimer= class(TComponent)
    private
      FHWTicks:TimeBaseData;
    public
      property HWTimebase: TimeBaseData read FHWTicks write FHWTicks;

The demo defines a public TEpikTimer:ET and fails to compile with "Error:
Argument can't be assigned to" from fpc-2.4.2 on this statement:

ET.HWTimebase.TicksFrequency:=5

This reference seems to be a well defined int64 and used to compile in
older versions of FPC. Can someone tell me what has changed and the right
way to assign this value?

Thanks,

-Tom