If you get the following error message when running 3.23.05 on a recent version of Windows (7/8/10)
miniGW runtime assertion
assertion failed
program: C:\Program Files(x86)\Fldigi-3.23.05\
file src/hostapi/wdmks/pa_win_
Expression:False
and version 3.23.04 runs correctly.
Then you should remove 3.23.05
and download/install 3.23.05pa from Source Forge.
sourceforge.net/projects/
73, Dave, W1HKJ